I bought the one that goes for 69.99 - its the least expensive that I saw. I wouldn't use it to "clean" my kitchen floor - I have ceramic tiles. I would give it a good cleaning though and then use the Shark each eve or every other day (depending on how messy my husband is) and give the floor a good cleaning less often. My tiles are rustic with lots of "dents". As I'm getting older, I'm looking for ways to clean but not wear myself out. And I hated all the products for the laminate floor. The Shark works great!! I think I'll bring it next door to check it out on their tile floor. Their floor is white and very even.