This is the best vacuum cleaner I've used so far, and it's my first bagless and my first Dyson.
It's fairly lightweight for its size and bulk, and I like the way it packs quite neatly, and I like that it doesn't have a bag and that it does a good job of sucking the floor and carpets. I love the button that you press to release it off of carpets so the carpets don't stick to the sucker head - conveniently placed where the handle is so it's easy to use.
I also like the accessories that come with it by default - the crevice tool and the brush. I have skin allergies so I'm happy this thing has a HEPA filter which doesn't stink when it blows out air.
I don't mind the noise which I think is comparable to other vacuums I've used, and I don't mind the slightly smaller dust container. I do have to empty it out after 2 or 3 runs. I'm also fairly short so the wand is quite a good length for me, not too short or long.
The only thing they could've done better is that when it packs up, the head kind of sticks out so it doesn't look like as compact and neat. But this is totally superficial. I love this baby dyson.