Does anyone here have experience with the full sized PX4 Storm? My son is considering one and would like to here from others that have, or have had them. He has smallish hands and none of my guns seem to fit him just right. With the adjustable back strap, he thought that he'd like it. Also in consideration is the new FNX 9, it comes with 4 back straps! He likes the looks of the Storm better though. He isn't really considering the XD or M&P.