Ditto to everything, including praise for the Metalform magazines. My Kimber TLE II came with 8 Kimber 8-round flush mounts and they've been flawless so far. You can find them on eBay for less than $22 and that's with free shipping. Have fun!Another vote for Wilson Combat, but you can't go wrong with McCormick, Mec-Gar, or Tripp mags. I picked up a handful of used Kimber mags for the range recently from Ebay for a steal, and they all functioned flawlessly.
@Jstudz220 is right, don't skimp on mags, especially if you're going to be carrying them. I use a paint pen, and a series of dots on the bottom of my mags to number them. Makes it easier to identify any issues at the range and pull a mag from rotation