I have the shark steam mop and I love it. I do my kitchen, hallway, foyer, bathroom, upstairs hallway and both upstair bathrooms in less than an hour with the Shark. It's great.
1.) Don't use tap water. It has minerals in it that will little spots....use distilled water. A one gallon jug will last you a long time.
2.) Don't dry the pads that come with it in the dryer...just let them air dry. I dried my first one in the dryer and I didn't use a dryer sheet like the directions said, but I think there was too much dryer sheet residue in there because the pad practically stuck to the floor the next time I used it. Just air dry them.
All of those areas I mentioned are hardwood, Muskoka maple floors except the upstairs baths...which are linoleum.
I have to do my floors sometimes twice a week because I havce kids running around all the time. Shoes, no shoes, socks, bare feet...it doesn't matter the floors show everything in a few days.