I'm partial to a S&W 627 myself..
But then I was always a little different... With the new USPSA production rules, you no longer need mount your moon clips behind and around the side.. You can now wear them the same way as you would in Revolver division. All you need is a "carry" type holster for it. Bladetech or something similar works. Though you do have to keep the hammer spur you can still do internal modifications.. I don't think I'll have any trouble keeping the trigger pull to about 6 pounds..