I've actually gone through the trouble of trying Zagg, BodyGuardz (wet), SGP, and Realook.
Of the four, the best (hands down) is Realook. It's completely clear, comes with two screen protectors, relatively cheap (compared to the other ones at least), and feels AWESOME on the phone. It's also cut very precisely and covers the whole screen. This part may sound crazy, but I actually like swyping on the Realook more than on the naked screen!
For SGP, I heard so many positive reviews on it that I decided to buy two packs for myself and my sister. I have concluded that either (1)my phone is uniquely strange or (2)ALL the screen protectors were defective, because every screen protector not fully adhere and left a thick border around the phone. Of course, I got replacements for them for free from SGP (wonderful customer service, but only available through email), but those were defective as well. I ended up returning them and getting my money back. The SGP screen protectors also don't fully cover the screen (it leaves out the front facing camera and proximity sensor). The feel of SGP, however, is on par with Realook. There's also more variety for SGP, but since we have an awesome Super AMOLED screen, we really should be using
BodyGuardz has very little orange peel on it, and it comes with two for the price of one Zagg. The orange peel is actually unnoticeable unless if you look at it from the side. BodyGuardz felt tacky at first, but after some time, it became smooth like Realook and SGP. Also, it doesn't fully cover the screen, just like the SGP.
Zagg always has horrible orange peel on its screen protectors and a pretty bad tacky feel to it. I suppose an argument for the tackiness would be better grip though. The worst part is that it's so expensive for just one. In addition, both the Zagg and BodyGuardz are soft screen protectors, so even though if they are self-healing, dents and other things still remain. The coverage of the Zagg is the same as SGP and BodyGuardz.
So, to sum up this whole bunch of text, Realook ftw!!! Hope this helps people in choosing!