I was actually just going to post something about the HD anti-glare but you beat me to it!
I picked up this film set today at my local Apple store. I intended to pick up the crystal one since I've been reading that it's the best screen to get if your looking for something that doesn't feel like it's there. But all they had was the HD anti-glare, so whatever. It says on the front that its "compatible with retina display" so I figured that it's as fine as the other.
When I got home I was reading the back. At the very bottom the package states:
"Usage of this film on your device's screen will reduce image clarity and touch sensitivity."
?!?!?!
I'm not too picky and will still try it, but I thought others (especially on the macrumors forums) may want to know this little detail before buying.
I recently went from using the power support crystal to the anti-glare and it was a move that I don't regret for a second. The crystal is nice, but when playing games on the iphone, finger prints/grease buildup or whatever you call it would begin to build up on certain parts of the screen until you begin to lose touch sensitivity on the screen, and would be forced to contstantly wipe the screens. Most prevelant on games where you are constantly touching the same area (i.e. fps or rpgs with directional control for example).
The crystal would also get oily from holding it to the face after a call. I finally got sick of it and decided to give the anti-glare a whirl and the fingerprint/grime build ups stopped. Is it as crystal clear as the crystal version? No, but does the retina screen still scream "awesome"? Yes........the anti-glare does not detract that much in my opinion and the benefits far outweigh the drawbacks.
Twice I made the same mistake in buying this HD Anti-Glare film set. THIS IS NOT RETINA DISPLAY COMPATIBLE. They say it is but seriously it ruins it. Your retina display will look like a 3Gs screen. However, the crystal film set from Power support is retina display compatible.