most definitely the InvisibleShield. it's worth the money, i can promise you that. it takes some time to put it on correctly, but once you do get it on and get the bubbles worked out, it's awesome. and just like in the videos on the website, you really can take a key to it and nothing appears. it's quite brilliant. highly recommended . unlike BSD or whatever it is, this is supposed to last you forever, not just until you need a new one... PLUS the IS is backed by a lifetime guarantee! so if you decide you don't like it, send it back. you also get your 30-day satisfaction too. ok. long enough. hope i could help!