I have been wanting a second vaccuum cleaner and stumbled across some positive reviews of the iRobot Roomba vaccuum. After watching the demo video, I coundn't resist. I am now the proud owner of the Roomba 550. I still haven't fully charged it, just got it today, but I couldn't resist sending it out on a test mission. husband and I found it to be totally facinating. We spent an hour just watching the the thing. It is amazing how it goes under the couch, through chair legs, etc. Also fun to see the dogs and cats reaction. It seemed to do a nice job as well but I only tried a small area. I will set it lose in a larger area tomorrow after it is fully charged. Bored? Check out the cat vs roomba videos on youtube. They are too funny!