We have this one and its well worth it! It has different pads for hard wood, carpet, and tile. They are washable so you dont have to keep buying more like swiffer. We just use our regular cleaner in the solution bottle. We have had this for 3 years and it still runs like a champ!
This one has 4 1/2 stars and is $109 - that seems like a pretty good deal to me!
We also have the Shark duo and really love it!!! It works great on both hard floors and carpets, and is not hard on your back! Good luck :)