Comfort?? there is so LITTLE size differemce between the shield and th3 9c,that shouldnt be an issue. The slight difference is in the weight IMO I also believe the few more rounds is a HUGH difference.
I also own several 1911's Kimber Pro Carry II Para LTC and a Old remington Rand, if they could make a 1911 thats 100% raliable then i would also but another one