Optic is the best - need to clarify mis-information about the S-pen
I originally got the crystal,and it was nic e, but I swear it attracted more fingerprints than the bare glass itself. I decided to buy the optic on Black Friday (30% off, free shipping direct from Spigen). It does make the "voop voop" sound when you swipe it (like corduroy pants), but it's not that irritating.
The first day or so, I noticed the S-pen was very sticky on it, it was hard to write. However, after a couple of days, it was fine. I've seen this before with other hard plastic screen protectors like this - there is some kind of stickiness from the protective film that covers the actual protector that evaporates away after a bit. The pen actually feels better now than it does on bare glass. It has just a tiny bit of resistance; it feels like writing on paper.
Also, the image quality is amazing. It's hard to describe without seeing it. I don't notice any fuzziness in the image at all, but with the glare cut down ever so slightly, everything looks somehow sharper. And, no fingerprints.
I know there hasn't been anything written positively about the Optic yet, but I guarantee it's the best one. Give it a try, leave it on a couple of days, and you'll see what I mean.