I bought my XD40 subcompact about a year and a half ago, and I too love the little thing. I haven't seen it in a few months, I'm deployed, but I've got a few short mags with the pinky extension that hold 9 I think and a full size with the grip extension that holds 12. It's a great fiream for the price, and a bit more attractive than the glock. I took it to a gun show once for trade or sell, and it was popular with everyone who looked at it, and the offers were right at what I had paid for it. I ended up not parting with it, wasn't even sure why I took it in the first place, but It made me feel better about keeping it.
When I first got it I also bought a little X2 light to go on the rail, it made for a handy home defense weapon. Oh yeah, after looking around, there aren't too many subcompacts that offer the accessory rail, glock doesn't I don't think. Another reason I'm glad I kept it. I'm a believer in the weapons lights. Anyway, enjoy your XD.