ZERO PRO (5-Stage)

I was gonna buy that but they said it may make noises high pitched, when in sleep mode etc. Ended up buying winix zero pro, not bad at all so far. Frankly I think that buying 2 good ones instead of 1 giant purifier might be better, small apartment or not. But im definitely not an expert so take my advice with a grain of salt. Im learning.

I live in Spain, so we may have similar products. I bought a Winix Zero Pro at a local retailer a couple of years ago and I'm happy with it. Dyson is generally overpriced. They have good products (we've had a couple of their vacuum cleaners), but they are often times too expensive nowadays. I can't say much since I don't know about purifiers, but stick to brands like Philips, Coway or Winix. Preferably avoid Amazon reseller "brands". And check for the prices of filters and how often you have to change them, you don't want to have to swap them every couple of months. Make sure to check reddit for comments on whatever you are planning to buy. Also, where are you planning to put it? If it's a big room, like the living room or a kitchen+living room kind of thing, you'll need a good one to be able to move all that air a bit, if you have several smaller rooms, you may be better off buying several of them but with slightly less power.

Just make sure buy a modern model. HEPA filters have evolved a bit over the years and so has the regulation. Old "HEPA" filters might not be true HEPA by today's standards. Just make sure you don't buy one with an ozone generator, or if you do, since many come with it (my Winix with PlasmaWave, for example), remember to deactivate it. They are not very good for people's health and I guess they are far worse for birds For reference, I have a Winix Zero Pro

No matter what you'll end up with, don't get a winix. Any of them. Baffled to see that, winix zero pro has been discounted (without a notice) and.. That on the EU branch, the filters aren't available to purchase anymore (out of stock). But worse, theirs hepa filters are not what they do claim to be, and they got a lawsuit. Such a bad experience. Never again.

Of those I'd go Winix, more so because I know Winix better than Phillips + Air Doctor, which are both decent brands I think too.  As well as Blue Air but that has ionizer that can't be turned off, so it creates a tiny (safe) level of ozone, but a small % of people will still have respiratory bother from even safe levels of ozone.   I think Air Doctors might have medical grade HEPA,.and more expensive filters.  So unless you were doing virus control, you wouldnt need to spend extra on medical grade just to filter pollen + allergens etc.(and HEPA still captures viruses, but the medical grade would just be better at it.) Phillips is probably good, but we don't really have much of that in US.  So id prob go with the Winix, as those perform very well, and it also has a ionizer but you can toggle it on/ off if you don't like it.  (The 'P" for Plasma button on the panel.)   I think that unit would give you about 5.9/6 air changes per hour with 4.8 being "good" and 6 being excellent..(rough estimate - not great with metric.)  So you would have very good to excellent air quality on high.   Edit: I would not get the Phillips because that is apparently a combo fan, and those are weaker units that move less air.  So that would only give you about 3.3 air changes an hour, which is a minimum of coverage, but not even "good".  Other normal Philips units, if big enough for your space, prob fine though. (Just not combo fan units.)

IQ Air is one of the best as the Health Pro Plus Xe I think does a good 300ish CFM while also having I think 15 pounds carbon pellets + related to absorb odors/VOCs/smoke etc. Although if your allergies are purely particulate based you can get 400CFM of particulate coverage for like 90 bucks with a DIY CR box /Corsi Rosnethal box.  (A 30 dollar box fan taped to a set of 4 merv 13+ filters is as much or more particulate coverage than you will get from any 300-400 dollar air purifier pretty much.)  So you don't need to spend 1,000 dollars on a unit to get good air.  If smoke/odors/gasses and allergies related to those issues then definitely IQ Air.  And it's one of the best units anyway.   But for physical allergens many units do very well, units from Winix, Levoit and Coway all perform really well and close to each other.  In particulate coverage.  So I like Levoit as they are simple and effective and good value for what you get.  So a Levoit core 600 is a powerful unit with 390 or so CFM for 280 bucks or so.  Has air quality monitor as well.  If you want an ionizer you can get the plasma pro version, but be careful as ionizers can cause respiratory distress in some.  So some Winix + Coway units have ionizer that can be toggled on/off but you have to look closely.  As well Coway uses an antibacterial fungicide on their filters in low/safe levels but if you have allergies relating to that then I'd go Levoit or Winix,  but they are also good units otherwise. Dyson are known for being very quiet and have good air sensors but they don't move much air.  I think it moves as much as the Levoit 200 you already have...but it costs like 800 dollars more.  So not really worth the cost if you just want the best particulate coverage.  Alen is a good brand too that is kind of good at both particulate and VOCs, with their best filter.  And they have a lifetime warranty if you stay in filter replacement program.  Austin Air are also 2nd best for VOCs,  but don't move much air in terms of particulate coverage.  I think it's a good idea to have a unit good vs VOCs even if it's not your top priority so maybe an Alen 45i or 75i + a Levoit Core 600 or similar priced Winix.  Alens are also quieter, but don't move as much air as Levoit/Winix/Coway.  As slowly air flow is better at absorbing VOCs/gasses with the carbon pellets.  Levoit has some in their filters but not nearly as much as those other units more tailored for VOCs, so a Levoit can still help a little in that regard likewise Winix + Coway also I think.  But Alens are a little better for VOCs a little quieter and a little slower, but still decent at CFM speed.  IQ AIr best units also good at both and better than the Alen by a lot.  Austin Air very good VOC, kinda slow for particulates.   So again, depends what types.of allergies/needs.  But for just particulates, with a little help on VOCs...Levoit, Winix, Coway all pretty great.  Or even a CR Box which at 90 bucks and 400 CFM rivals or outdoes must about any unit for particulate coverage.  Even 1 box fan with a merv 13 filter in front/behind it..can do about 150 CFM...pretty close to what the vital 200 does.  As box fans are big,.cheap, energy efficient...and move a lot of air.  That's essentially all most purifiers are.  A filter + a smallish fan to move the air around.  You pay more for air quality sensors, filter replacement reminders, apps and various others features.    But lots of units can capture particulates every well,.even 90 dollar CR Boxes + related.  So something like a Levoit Core 600/Levoit Everest Air/Winix + a unit for VOCs like Alen might make sense.  (Alens are sortof thin so a hallway might work.)  Or get the IQ AIR if you have the money to spend.. but you will still want another unit too for total CFM coverage.  Lots of options...so what features are most important to you ?    Another really thin unit is Rabbit Air, as you can even hang them on a wall...however they also don't move much air.  Maybe if you put two, on one each wall, but that's pricey as they are a bit Dyson-esque in paying like 250 bucks or so for only I think 113CFM. So two of them would be around 500 bucks for only 226 CFM...so definitely not good value.  But space wise can be useful in some instances perhaps.  

I got one from Winix zero x air purifier. Go from the square meter coverage, and one with a hepa filter. What are your priorities, budget, does it have to be quiet/small etc?