Are there any good screen protectors in the market that you guys would recommend? I the Moshi AG one looks good - but a little pricey to experiment with at $38. I just got a new 15" Retina for personal use and I'm paranoid about scratching the screen. Somehow, I managed to put a small "rainbow line" in my work retina any don't want to repeat that with my personal one. Thanks for any opinions!