well fellas, i have to say, as an owner of colts (both old, and very new), a kimber, a springer, a sig, a para, and a smith 1911, i can honestly say the toughest, highest quality without breaking the bank into the wilson or ed brown level- is IMHO, the springer. just make sure the modifications you have done are 100 percent reliable- and realistic. dont load up your carry weapon with a bunch of competition toys. id say the most important upgrade is a good carry bevel/dehorning job.
my own personal comment- (only because so many of us have tried to sway the op into getting a 4.25" weapon) if youre able to pack a 4 incher, with standard grip, i would advise you to get a full size government 5" weapon.
my reasons: increased reliability, longer barrel for ballistics, longer sight radius, better feel in the hand (imho), and the fact that then you only need one weapon instead of 2- for a duty type full size, and an off duty type carry weapon.
if you go with a quality belt, and holster- like a milt sparks summer special IWB holster, you will not have difficulty packing the big iron. remember its the entire system together- a wal mart belt, and a million dollar holster wont work. you need a solid foundation to strap into.
there is lots of debate about how realistic that is, but truth be told, its not a big jump from your commander length weapons. if youre gonna go light, with shorts and a t shirt, maybee its a j-frame day! im just saying- the direct comparison to a commander, and a full size isnt much of a change, and you get a world of benefit from the fullsize, in my experience.
either way, enjoy carrying a 1911. im stuck packing a glock for awhile, both on duty and off- and it feels like im cheating on my 1911's!