I have been looking into using a stylus for note-taking, and I've been really disappointed in the performance of the products thus far. I've used the Pogo Sketch, and i felt like i've had to press down pretty hard for it to register. It's made me curious as to whether or not the problem is that I'm using a screen protector (BodyGuardz). Has it been shown that screen protectors make it harder for the screen to detect input from styluses? This presents an interesting dilemma because screen protectors seem most useful when you are actually using a stylus, haha. How has your experience been with styluses and protective films? Please include brand names and models, if possible.