I've had the Dyson regular stand-up model for a few years, but the attachments weren't long or strong enough to reach all the way under my bed, which is against the wall on two sides.
Very recently I solved the problem with the Dyson Cyclone Animal, designed for the hardest-to-reach places. This long, cordless vacuum is in a category called "Sticks." It swivels so that you can lower the vacuum virtually level to the ground and get about eight feet under your problem areas. It also has a ceiling attachment, and a few more that I have yet to consider.
With this low-swivel ability comes the drawback of a smaller canister that needs emptying more frequently, but I am cleaning in places I could never reach before. The two Dysons together (yes, pricey) should handle any need in your house/apartment.