Congrats and a belated happy b-day to you! The Team Match II is a nice-looking gun. Did you get it in .45 or 9mm?
As for mags, there are a ton of options. I've got a Stainless II on order in 9mm and I'm amazed by the number of mags available for it and that's in 9mm. You have options from Kimber, Wilson Combat, Virgil Tripp, Check-Mate and Mec-Gar, whether you want .45 or 9mm.
I guess the best thing to do is to figure out which magazine you want and either post here to see how typically has the best price on that brand and/or do your own online comparison shopping.
Good luck on your mag decision.