I've read through alot of the threads on cleaning the iPad screen; the consensus seems to be microfiber towels. I had a pack in my garage that I had purchased, and they happened to be lint-free, as recommended. I tried it out, and seems to work well. However, I noticed that the material is a little gritty feeling on my hand. I know there are two different types of microfiber (one smooth, similiar to a Shamwow), and one "furry". Is it ok/normal that it would feel a little rough on my fingers? I'd imagine it won't scratch, as they're supposed to be for waxing a car, but I thought I'd include pictures anyway as I am a worry-wart.