I have a Steinheil on my Dinc now and I'm not sure I love it. It is crystal clear and hardly noticeable, and does not contribute to glare. Installation took seconds and was dead simple. However, it isn't as scratch resistant as I would like. I've only had it on there for 2 weeks, but it is already all nicked up. I'm sure the screen wouldn't be (I carried it "naked" for several weeks with no scratches at all, and my usage/abuse has been identical these last 2 weeks).
I'd love to try a Wrapsol or Skinomi or Ghost Armor, but I'm too timid about the "wet" application. If I could have it installed, I'd give it a go. But I think I'm back to the drawing board after the Steinheil.