
SEBO
AIRBELT E3 Premium
Ultra-durable, 10-year warranty, but expensive with short cord.

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I have the Miele Complete C3 Total Care. No complaints, with 2 cats.
They should both last long. The Miele S1 Guard has the new bag dock which should prevent the bag from leaking in the compartment from misalignment. The S1 doesn't have any of the drawbacks of the Miele L1 like the downgraded pre-motor filter and the compromised combo tools. As long as you learn to re-seat the bag on the C1 I would say it is equal in cleaning to the S1 Guard so choose whichever has the better sale. Australia got a lot more motor options than the U.S. so also check which model is coming with bigger motor. We don't get the S1 Guard in the U.S. yet but I was surprised to learn the S1 Guard Junior has a 2 piece metal wand while the S1 Guard has a telescoping metal wand. So that may be a deciding feature for you. The suction only Mieles are great for hard floors. You can always add a turbo brush later if you get low pile carpets or rugs but turbos aren't good for high pile, plush, and shag carpets. I'm not familiar with Australian stores but I found this [Miele C3 Total Care](https://www.thegoodguys.com.au/miele-complete-c3-total-care-bagged-vacuum-bronze-pearl-12396520) $294 AUD at The Good Guys. It looks like an in-store only but I would buy it over the S1 Guard Junior. The C3 has the same bag re-seating issue but once you learn that the C3 has a longer cord, a tool storage compartment, and this model comes with the turbo floor brush and the mini turbo brush.
What vacuum do you use now? There are a lot of Miele models, so I'll try to answer as best I can. For Miele in the U.K. the Cat & Dog means the vacuum usually comes with an air-powered turbo brush (for rugs), a carbon exhaust filter (for odors), and sometimes a mini turbo brush (for upholstery). The main turbo brush is good for low to medium pile rugs or minimal carpets. A turbo brush will make it easier to clean rugs than just using a combo floor brush. It isn't good for high or plush pile carpets, lots of carpets, or long hair because it has a narrow diameter brushroll that gets lots of hair wrap. This applies to other brands turbo brushes as well. I'm wary that a turbo brush will be any good on your deep pile carpet, its likely it will stall/stop spinning. Then you'll just use the standard combo brush. While I think the Miele C3 is better than the new Miele Guard L1 you may want a vacuum with a carpet powerhead and carpet height adjustment to work on your carpets. Not a lot of canister vacuums in Europe offer carpet powerheads but Sebo still does. You may want to check out the Sebo K3, Sebo E3, and Sebo Felix upright vacuums. They have electric carpet powerheads with carpet height adjustment, but you might need to swap in Sebo's green soft bristle brushroll. Hope that helps.
The Sebo K3 and Sebo E3 cost more than the Mieles because of the carpet powerhead and wiring. The Sebo K2 Turbo and Sebo E2 Turbo are the non-powered canisters closer to the price of the Mieles. I saw in your other comment you're looking at the Sebo Felix which is a great choice for an upright with a carpet powerhead and some of the U.K. models include the Premium Parquet Brush for dedicated hard floor use. You can use the carpet powerhed with the brushroll off and the height set to 1 for hard floor cleaning too. The nice thing about Sebo powerheads is the brushroll pops out without needing any tools for faster access and removing hair wrap.
If you only have tile a suction-only canister vacuum will work well. You don’t need a carpet powerhead since you don’t have carpets, but if you find a good deal on a vacuum with a carpet powerhead you can just leave the powerhead on the side. I’d look for a Miele C1, Miele C3, Sebo K2, Sebo E1, Sebo D1, or Henry 160. They’re all very good canister vacuums. I like Sebos more than Mieles because they are a little more durable. You have to be more careful that a used Miele wasn’t abused by running it without a bag or using generic bags that let dust wear down the motor. There are a number or commercial canister vacuums that are also good at hard floors like the Nilfisk GD930. If you find a good enough deal can be attractive. Electrolux canister vacuums are pretty solid, the old brick looking ones. I’m not the biggest fan of them as they don’t roll as well as newer canisters. Avoid Kirbys, they’re made for carpets and avoid Rainbow vacuums as the water creates more work and weight. Hope that helps.
Miele's bagged canister vacuums are good but their cordless and bagless vacuums aren't as good. I recommend looking at the Henry Quick Cordless. It's one of the few cordless vacuums that uses pods/bags so you don't have messy emptying or filters to wash. They have removable and replaceable batteries and they hot swap so if you buy a second battery you can change it anytime.
My Miele pearl is at least 15 years old, still a beast. I don't use it that much any more because I have a Roomba now and it cleans every day wonderfully and I only break out the canister occasionally now for corners and cobwebs and such.
Wenn Du soviel Geld in die Hand nimmst: Miele CX - Serie; hat mein Schwager, ist gut. Wobei ich immer noch ein Freund von Beutelsaugern bin, die Beutel bringen einen preislich nicht um (und sind anders als Tintenpatronen nicht gechipt, günstige Drittanbieter also möglich) und sind sauberer. Du kannst die heutigen Staubsauger dennoch nicht mit denen von früher™ vergleichen - die Technik heute ist zwar effizienter, aber an die 2200W - Dinger kommt sie dennoch nicht ran. Quelle: haben einen neuen 890W Miele und einen älteren mit 2200W - der nuckelt wesentlich schneller mit der XL-Parkettdüse (übrigens sehr zu empfehlen) über den Boden.
We just got the Miele c3 complete care and it’s great. It doesn’t have a power head but we wouldnt use that on our area rugs anyways (it has an air powered spinning brush head if you wanted to use that)…the suction is really powerful, and picks up dog hair super easy.
Personally I'm not usually a fan of turbo heads but as far as they go, the turboteq that miele has is definitely my favorite. Is there any chance there's a vacuum store near you where you could go try one out?

SEBO
AIRBELT E3 Premium
Ultra-durable, 10-year warranty, but expensive with short cord.

Numatic International
Henry Canister Series
Budget king, super durable, but heavy and poor on carpets.

SEBO
AIRBELT D4 Premium
Durable, powerful, long cord, but heavy and pricey.

SEBO
FELIX Premium
Durable, powerful, good for allergies, but heavy with awkward attachments.

Miele
Classic C1 Cat & Dog PowerLine
Durable, powerful, quiet, but very expensive, short cord.

Ranked #1
SEBO - AIRBELT E3 Premium

Ranked #1
SEBO - AIRBELT E3 Premium

Ranked #1
SEBO - AIRBELT E3 Premium

Ranked #1
SEBO - AIRBELT E3 Premium

Ranked #1
Numatic International - Henry Canister Series

Ranked #1
Dyson - V15 Detect Series