
SEBO
AIRBELT E3 Premium
Ultra-durable, 10-year warranty, but expensive with short cord.
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With allergies, vacuuming is frequent especially with large in door pets for over 30 years! - have only owned preowned older well maintained high end vacs - only 1 vac has ever burned up motor wise which was a kirby g5 in all those years! Getting ready to pull out a 1977 rainbow "chrome dome" which was given to me free and came from a resale shop - it had a new motor and a newer eureka powerhead. Fabulous vac!
I have two GSD, females, 9 & 10 years old and I grew up with German Shepherds. I have a Royal, (Kirby), and a Rainbow water base vacuum. Rainbow is expensive, but will last 30 years, no joke. My mother had one for 36 years. After 36 years, my dad took it over and used it in his garage. I bought a used Rainbow from E-Bay 17 years ago. It works great on dog hair. Great suction! Good luck.
I'm a vacuum enthusiast and refurbished two Rainbows. I can confirm that filling the basin with water, emptying it mid-vacuum and then cleaning the basin and water separator after each use is a pain. I prefer to grab my Sebo and get the job done without any hassles (changing a bag is not a hassle). The E3 is the sweet spot in the Sebo canister lineup, its portable enough to carry upstairs and if your stairs are carpeted it will tackle that job too. I recommend the handheld turbo brush for upholstery and carpeted stairs and an upgraded bare floor tool like the premium parquet or the turn and clean style parquet brush.
I will get flack for this, but I love my Rainbow. Works great with 3 cats and teenagers.
I like my Rainbow better than the shop vac. It just works better. But the shop vac is nice to have around my old house for stuff like drywall and lead paint chips
Rainbow! Based on your comment, you cannot go wrong with a Rainbow. It uses water as your filter but it 100% removes the dirt. It’s easy to use! I will say, it’s an investment, so well above your $500 - however it comes with a 10 year 100% warranty coverage and an additional 10 year labor repair coverage. It’ll be the last vacuum you buy - but it will remove the dirt from your home instead of pushing, blowing and spreading the dirt around. It is an air purifier as well 24/7 with numerous attachments for everything in your home. You won’t be disappointed with a Rainbow if you actually want to remove the dirt from your home.

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