Ive got quite a few XDs and XDMs and they have never failed to work. I actually started shooting idpa with an ordinary xd 9mm (couldnt even guess the round count) and did very well (always placed ). But i needed a little more speed so i ended up moveing to glock 36 3rd gen. Ive got a xdm 4.5 set up for idpa but never warmed up to it.