I bought mine at a local dealer's shop, but here's a website
http://www.gunaccessories.com/Bagmaster/StandardHolsters.asp . FYI, I also bought a Taurus PT140 PRo on the same day and I love it too, but the XD is too cool, mine came with a bag, cleaning kit, Springfield holster, magazine clip and a springfield armory buck knife all in OD green.
I looked a long time before I decided on the XD SubCompact. I’m like you. I love mine; more than a man ought to love an inanimate object (although, I’m beginning to think mine loves me back...).
It shoots amazingly well for the short sight radius, the trigger is terrific and it breaks down in nothing flat.
Although it seems “broad in the beam”, it’s actually flatter across the grip than a 1911...which is my all-time favorite pistol. Seems weird, but it is true...