Maybe I'm lazy and have low standards for vacuuming (no kiddies near floor level), but I love my Roomba. They make a pet version, but my regular one picks up plenty of dog hair just fine. I like that it fits under my couches and bed so there's no need to move heavy furniture for dust build up. I LOVE that I can vacuum and ride my bike at the same time. All newlyweds should be given a Roomba so they have one less thing to argue over.
"Bicycling is a big part of the future. It has to be. There's something wrong with a society that drives a car to workout in a gym." -- Bill Nye