
Coway
Airmega AP-1512HH Mighty
Durable, effective, but struggles with strong odors.

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Have the honeywell 1800 series. Works well, just the filters replacements are difficult to find here (Canada). I have the feeling I will eventually pay 3x the machine price because of how ofter I need to replace the filters because my neighbours smoke leaching into my condo.
They're not the quietest* of all available options nor the cheapest but every one of my Honeywell devices has worked very well with daily use for 5+ years. I bought them on sale, watch for filter sales online (I buy the Honeywell brand as I haven't found good testing data for knock offs) and I have no regrets. Models I use: Honeywell Insight in Medium-Large (x2) and Large-Extra Large (x1). * They do run quietly on lower settings but I generally use the higher two settings.
Honeywell we use the big 500 sq foot one for main floor and the smaller 200 sq ft one for the bedroom leave them on low change filters every 4/6 months
I love the ugly-ass Honeywell tower one i have. You can get washable filters too, which is a nice money saver. It's relatively quiet and powerful. Everyone should make at least one Corsi-Rosenthal box though because they are super effective!
I have a huge Honeywell tower that I loved for my old studio apartment, but now that I’m in a large house I honestly think corsi-Rosenthal is the best bang for your buck. They’re incredibly effective, cheap, good for large spaces, and customizable.
Mine is a Honeywell. Because I know I'll be able to continue to get filters (even if I do buy off brand ones, bc theirs are SO expensive). Standard filters is the way. The A+ prefilter is better than the standard softer A style, but both are good at catching cat hair (I vacuum it off regularly)
Honeywell makes standard styles/sizes (mine uses two R filters) and other companies use the same system so it's easy. You can also search by model number (ex hpa 200) These are what I bought last time: https://ebay.io/m/JRqZjg

Coway
Airmega AP-1512HH Mighty
Durable, effective, but struggles with strong odors.

Levoit
Vital 200S-P
Smart, quiet, great for dust, but some report filter smells.

Winix
5500-2
Great value, but noisy motor and Plasmawave issues.

Coway
Airmega Mighty
Durable, responsive auto-mode, but struggles with strong odors.

Winix
5510 & 5520
Good for allergies/pets, but carbon filter and Plasmawave issues.

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TEQOYA - Nomad

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CleanAirKits - Corsi-Rosenthal Box

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Austin Air - Healthmate Plus

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Winix - 5500-2

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Coway - Airmega 400

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Coway - Airmega AP-1512HH Mighty