I use SGP Steinheil, which is REALLY REALLY GOOD (I got it at recommendation of a tech savvy friend), and I found that it offer's really good protection. It makes the screen a little less sensitive, but I feel the main difference is the "feel" of the screen. Now the touch screen has a little resistance and honestly, I pretty much only feel it while playing games, but it took a lot of getting used to. I really liked the screen feel out of the box, but I think a couple less points on Line up or Bonsai Blast is worth it (especially since I keep my phone in my pocket and like stuffing my pockets during the day).