Hi, Does anyone have an AirCraft PowerGlide? Is it really any good at cleaning hard floors? The downstairs of my house is tiled with slightly uneven tiles that tend to trap dust and dirt. No matter how often I mop they never look clean. I have tried a steam cleaner that didn't do much. Nothing works, the floor always looks slightly grubby. I would love to hear some opinions on this before I buy as it is pretty expensive.