I have a cleaning business and went through several brands of vacuum cleaners and these are by far the best I've ever used. The suck on them is amazing. They also don't carry odor from house to house like the other vacuums I've used. If I was at a house with pets, I could still smell pet on the vacuum once I ran it again elsewhere even though I'd cleaned it out. The long extension means I don't have to drag the thing up and down the stairs with me and I can easily get baseboards as I move along the carpet. I generally don't detach everything on the hose and switch it all around, I just stick the brush on the end which makes it a lot quicker and easier. If you buy a reconditioned one they are under a 6 month warranty so register your vacuum with dyson if you buy one. If anything goes wrong they'll send out the part free of charge.