M&P Cons:
- mag disconnect (I've heard stories that it can be ordered without the mag disconnect, and that no mag disconnect is not an option. -not sure what to believe, and have not confirmed either way. If someone can shed definitive info on this it would be appreciated)
- Magazine bases prone to breaking (I've only heard of this recently, not sure if it is an out and out issue with all)
- Question of parts and service availability due to new(er) pistol release
- Question of finish wear? time will tell
Pros:
- Interchangeable / modular grip back strap
- Price (comperable to XD)
- Stainless slide
- mag release is interchangeable left or right
XD Cons:
- Service and support. You break it, and it has to go back to Springfield.
Springfield will not release parts.
- Finish (slide finish on older models sucks, I believe Springfield has improved it slightly, but it is still prone to wear)
- Only the 5" 'tactical' model available in Canada (their 4" service model is prohib.)
- Grip safety (I don't find it an issue, but some do)
XD Pros:
- Rugged, proven design (has previous history as HS2000)
- Price (comperable to M&P)
- Stainless steel magazines
- Grip 'feel' and angle -reminiscent of Browning HP
- True ambi-mag release
- Somewhat established (still growing) aftermarket (won't take long for M&P to catch up)
I've marked pros / cons of each in order of importance to me, ymmv as always.
Overall I really like both. Mag disconnects and Springfield's refusal to release parts both piss me off royally.