Miele bagless.
Can't fault it - if we had more than carpet on the stairs, I'd buy the additional Turbo brush attachments, but the standard ones supplied do us perfectly well, even with one 'normal' TwatCat and one FluffyArsedMareCat to send tumbleweeds gently cascading across the floors.
It's so agreeable to use, DP has done all the vacuuming ever since we got it this time last year.
Had a Dyson Animal back in the past. Alright, but heavy, noisy and I ended up taking their Turbo Brush to pieces after every time I used it to get the strands of hair and fluff out, I had to wash the filter every third use (so bought a second so that I could just swap them over) and the plastic self destructed by the third year. It was only a tiny 2 bed flat, too, so it's not as if it was having to cover a great deal of mileage.
Tried a couple of uprights, which were absolutely useless.
Henrys don't clean as well and I hate paying for bags. All other cleaners I've had have gone poufft within about a year of limited use or I've been unable to find replacement bags that actually fitted properly.
To give you an idea of how quiet the Miele is, I've got two cats that have always been absolutely terrified of vacuum cleaners - hysterical scrambles to get as far away from the things as possible. We can now vacuum right up to within six inches of them as they sleep before they slowly open one eye and decide they might want to wander off into the kitchen to see whether there are any snacks available.