1growingsprout As far as I know, there is no belt on a Dyson. Also, the whole design of the machine is to make sure it doesn't lose suction. From my experience that claim is true. (If you click on the link I posted they outline key points of the construction.)
You don't change the dirt canister, you just unlatch it, walk to the trashcan, pull the release and the bottom of the canister opens into the can. Relatch the bottom and resecure it to vacuum body. Your hands never have to touch the dirt.
We've had ours for a couple of years and use it 2-4 times a week (on MASSIVE amounts of pet hair) and it's holding up just fine. I suck up socks, cat toys, hair thingies, shoelaces, jewelry etc. on a regular basis and it hasn't seemed to have an ill effect on the working parts.
