Screen protectors have come a long way. Really, its up to personal choice on how they look, feel, fit and function. I've used Zagg on past devices and most recently picked up Steinheil crystal clear screen protector for my S2. Its great.
There are a few Steinheil versions and I believe all are "dry" applications. Meaning, no need to spray the screen before applying the protector. The only issue I now have with my previous Zagg was the "wavy" texture that existed when viewing the screen at an angle. It didn't bother me at the time and probably won't bother me now -- just a visual I have noticed since using Steinheil.