We are a Riccar family now. Had an Oreck canister in first house. It worked really well, but they didn't seem to stock parts past 5 years. So, why buy a vacuum you can't fix after 5 years.
We tried the Dyson. It worked okay, but was very loud and didn't like how you had to manipulate the on-board hose and attachments.
We have a Riccar canister downstairs and it works like a charm. Recently got an upright for upstairs with on board attachments. I like it as much as I do the canister, plus it is fairly quiet.