Another vote for the Armscor M200 series. I bought one just like the one in this review and I'm very happy with it:
http://ezine.m1911.org/showthread.php?t=140
I don't have hundreds of thousands of rounds through it because, like the OP, I carry a semi-auto, but it has been reliable when shot and the trigger didn't need any "slicking up" out of the box to be very acceptable. It won't take .357 Magnum but then, I wouldn't be shooting .357 Magnum through a small-ish revolver like that anyway. I have a Ruger Blackhawk for that.