Okay here's my comparison on the SPG Glas.T.r. vs the Bodyguardz Pure. I tried the SPG first and really liked the feel of it although it was quite thick and added a very small bit of extra heft to the phone. However it did stay down even with the Incase Slider which was a really tight fit. The SPG is cheaper to initially purchase but doesn't have the advantage replacement program for $13.00. The SPG is thicker than the BG and the SPG also has beveled edges while the BG is flat.
My first install on the BG got a piece of lint under the glass and I was able to take it off put a lint roller to it and lay it back down. It looks great and the home button is way less recessed comapred to the SPG. I also feel that while both screens feel great, the BG actually stays cleaner with less fingerprints. What I did find strange is though the BG is thinner, the Incase Slider will bubble and pull it up. As much as I really like my Slider, I like the BG way better and will use cases that don't interfere with the protector. So my pick of the two is the BG Pure. Fantastic in every way.
My ratings with the top being 10
SPG Glas.T.r - 8
BG Pure - 9.5