Since getting my CCW about two years ago, I've been carrying either a full size Springfield 1911, or an East German Makarov.
I prefer the 1911 however, the full size grip tends to print more often than the smaller Mak. I am currently saving my pennies towards an officers size, or smaller, 1911. Recently I compared my Mak to the new Springfield Micro Compact, and with the exception of the beavertail grip safety, they are almost exactly the same size.
I suggest that if you have a local dealer that would allow you to "try on" a holster and a full-size pistol, then take someone with you and compare the full-size to the smaller frame 1911's. Be sure to take whatever concealment garment that you intend to wear once you make your purchase. Have your friend watch as you move around, squat down to pick something up, reach over your head to pick something up off of a shelf, sit in a chair, or do anything that you might do while carrying.
You might be suprised how much less the smaller frame guns print through your clothing.
My disclaimer is that I've not yet fired one of the smaller framed pistols, so I cannot say how much different their recoil is. I've also heard that they can have difficulties in the reliability department.
If you are built in such a way that you can conceal a full size 1911, then by all means go for it! It's mighty nice knowing that you've got that much persuasion riding on your belt in case someone tries to do you harm.
Hope this helps.