I've heard many people claim the glass screen on the iPod Touch is...well scratch-free. Anyways, I've already purchased a case...one of the Griffin...uh...I guess rubber case? (Has bumps on the back for GRIP ACTION) I also purchased... WriteRight Universal Screen Protectors. But it seems that I have to force myself to actually tap something with the screen protector on, while if I use my iPod Touch without it, everything feels smooth. Should I just stick to my case and no screen protector, or is it advised to use one? P.S. I have one of those soft cleaning cloths...uh fibercloth or something, I think that's what it's called.