I have a Galco Miami Classic II. It holds the gun well, doesn't get in the way, doesn't drag my shoulders down (carrying a 4 in. 1911), seems to balance well, hides well under a loose fitting denim vest and doesn't climb up my neck. I would however recommend you get and use the straps that tie it to your belt.They really are worth the extra $25. Now, having said all that, I don't have a very active life style. The last several years I've worked in retail and have been completely retired for two. I think what I said will apply to your more active life though.
The only caution I would give is stay away from the rigs that rely on elastic. The one I had made my shoulders feel like they were rubbing together after a couple hours.
You might also want to look at the rig from Lobo Gun Leather. I got my Galco before I found his site.
Lobo Gun Leather - Home