My problem with the Boxwave was that it was just a tiny bit too big for the screen so it wouldn't (couldn't) stick down flat on one side. I endured that for several days until I couldn't stand it any longer, and then I simply pulled that side up and trimmed it to fit. That didn't work perfectly because I didn't trim it perfectly but it definitely improved the fit and allowed the thing to lie down flat. When I get a new one, I will draw an outline of the screen on paper before attempting to put it on, then make sure the protector is exactly that size, trimming it if it's not, and put it on only after it's the right size.
I think the protector does dull the view of the screen a bit, but I just wouldn't feel that the screen was safe without it. It's not that I touch the screen excessively, but Life just has all this dirty stuff in it, and those screens seem pretty fragile to me. Better safe than sorry, sez I.