Does anyone have one? Do you like it? I'm looking at one on Overstock and I'm debating whether or not to get one. It's only been about a year since I've bought my vacuum and it's already losing suction and making a burning smell every time I use it. I've cleaned it out every time I've run the thing and found pet hair and dust all up in its crevices. I really hate it and it's hard to maneuver around in my small place. I'd like to get a roomba but I'm not sure I could justify to myself the expense. Even though it's not much more expensive than the vacuum I bought a year ago, I feel lazy having a robot do something I could very well do on my own. Although, my dog sheds so much each day, it's so hard to keep up with the vacuuming, it would be nice to have a little help. Thoughts?