Wilson 47D's are usually a good choice and won't break the bank as much as a couple of the others. Chip McCormick is supposed to make some good mags, and they are a bit cheaper, but I have been hit and miss with that brand ( I think they are called Shooting Star mags - the ones I tried ).
Recently I got my hands on one of Cane's offerings, a Cobra Mag by Tripps Research, and it is very impressive. I have not shot it yet, and I have been meaning to so I can do a write up, but perhaps this weekend. I can tell you this, for a reliable magazine, this thing is pretty friggin sweet and it dry feeds ammo with no problem at all, even on a short stroke of the slide.
Best advice is find a couple you can borrow and see what the gun likes. If you run into an issue, hit me up by PM and maybe I can find a couple of testers to send your way.