I've come not to like Zagg covers as well. When newly installed, they are pretty good, but if you pocket your phone, they will peel and collect tons of lint.
The warranty is OK, but I'd rather not have to replace my cover every few months.
The only Zagg cover that I currently still use is on my camera LCD. It's got bubbles under it that never worked themselves out (as they should have), but I leave it because it's not that huge a deal on a camera.
I had my Incredible screen cover on for maybe 2 days....my screen kept wigging out due to the weight of the cover (I'm guessing) so I tossed it in the trash (goodbye $20....should have rolled a smoke with the bill).