I've tried several liquid applied protectors (like Zagg) and hated the rubbery grip feel & the orange peel effect. I've also tried the expensive Steinheils (I guess they changed their name to Spigen), and I had to replace them because the edges wouldn't stick (or they'd unstick after a month or two). Then, I went to the much cheaper Realook protectors, and those were the best ones I've tried (feels great, looks great, covers the ENTIRE screen, and stays on unlike the Steinheil). FYI, Realook also makes liquid applied screen protectors that are garbage, so stay away from those.
Question, is the Glas.t slim thinner than the Glas.tR slim? I'm thinking about buying one of those, even though they cost more than 5x the price of a Realook.