OK, I think I have it settled...
Mom can't afford a new vacuum yet. I just created this thread to obtain advice on a good, cheap vacuum for whenever she decides to get a new one in the future.
She likes bagless, and doesn't like bags. I don't think she would clean a pleated or foam filter on a cheap bagless vacuum, so I think cyclonic will be the way to go. Besides, she doesn't trust Walmart. She doesn't have pets, so she just needs something to do routine vacuuming once or twice a week in her small apartment. I know she wouldn't fuss with a canister either. Her place is pretty much all carpet, except in the kitchen, bathroom and in front of the entry door, so I think the Hoover Windtunnel Air Steerable is the way to go!
Plus, for the kitchen and bathroom floors, the Air Steerable has an on/off brush switch and a long hose and wand, so those are the additional reasons that I've picked out that vacuum.