Well, Springfield Armory has made a sub compact in 9 and 40 but not in .45acp. For carry-conceal, I personally prefer .45acp and would really like to see an XD s-c in this caliber. I've tried out glocks, but they still in my opinion don't have the grip right in yet, at least in the larger models. The gl 21 sl is still to big to grip if you have shorter fingers. the gl 30 and gl 36 are the same, too big and the butt of the grips on these two actually digs into your hand. No other gun feels as good in the hand as the XD's. XD's in my experience will feed any ammo. They are just an all around great gun. Just waiting for the XD sub-compact in .45 acp. Maybe someday.