I've shot the XD 9 compact. It was a nice little gun. Good value for $500 bucks. Trigger is something you love or hate with the trigger safety. I liked it cause it was short and pretty clean. Is this for carry? If so, another option is the Hk P7 if you're fine with 9mm. People argue over caliber, but it all comes down to shot placement over caliber size, so whatever gun you're most accurate with. You can get a PSP version of the p7 for $500, keep it locked and loaded, and the squeeze cock grip ensures no misfires, and the euro clip release ensures no accidental mag drops which happens with a lot of other guns, the XD included. The P7 pretty damn slim too, but probably a little longer than the option above. It has the best trigger ever IMO, I like it better than most 1911's I've shot.
If its not for carry and more range time, get a fullsize. Or a P7

Seeing the trend here. I love that gun. Shoot one you'll see why there's a cult around it.
http://en.wikipedia.org/wiki/Heckler_&_Koch_P7
Good luck and Happy Holidays.