Just did a review of the Boxwave ClearTouch Crystal screen protector in this same forum. Check it out. In short, it's good and I like it. It's totally transparent and the screen still looks great through it. It was easy to put on, particularly compared to what I've read about how it can be very difficult to put certain other kinds on. No orange peel appearance, no corners peeling up, etc.
Basically you're choosing between plastic and rubber, wet-apply and dry-apply, clear and anti-glare. There are advantages and disadvantages to each. I knew I wanted crystal clear, something that I was able to swipe smoothly over, something that was easy to apply, something that wouldn't get stuff stuck under it permanently. and something that wasn't ruined if I messed up the install. Boxwave's crystal option fits the bill for me. I probably would have gotten the Steinheil, which sounds similar and gets lots of love in the forums, if they had made a Dinc2 version when I was ready to buy.
So far the only downside of the Boxwave is that oil smudges from your finger seem to be more visible on this protector than they were on the naked screen. But now I don't worry about grinding something unseen into the screen when I wipe those smudges away like I was with no protector. I treated the Thunderbolt I had briefly like a baby and still somehow scratched its naked screen. I hear through the grapevine that sand is the one thing that will scratch Gorilla Glass and I live in a sandy environment, so maybe that was it. Not an issue now.