AGF - GRT is my favorite also. Its the most sturdy in my opinion, some say it can restrict access to the trackpad, menu, return, green/red keys, however in my opinion it does not and I love the case - would not trade it for any other and would recommend it to anyone!
I bought a leather holster ahead of time, and clip it onto the pocket of my jeans, I like how it looks, and it does a rather good job at keeping the phone safe while keeping it accessible, I'll likely get the screen covered by Zagg or GhostArmour.
I'll likely get an OtterBox or Seidio if I find I begin to dislike the leather holster, but at least at the moment, for the money, I think you can't go wrong with the holster.
