I love the trigger on the XD. Its got a Glock-esque trigger that's much smoother than the Glock's, and its very comfortable. Don't get me wrong, I'd take a Glock before an XD, but that's mostly because I know the design so well already. Very good competitor, I'd actually love to get a 9mm XD-m soon if I can get the money.
A friend of mine has the XD-M in .40 and he loves it.