I have to say I love my Colt 1991A1 and it would be one of the last guns I would sell. I've had all sorts of other 1911 types (Kimbers, Springfields, Para's) and my Colt has been as good and even better than many of the other 1911's.
That said, I believe you are paying more for the Colt name. Especially if the extra modifications (beaver tails, extended safeties etc.) are important to you. Colt seems to keep things fairly consistant with the original design. The recent Colts I've seen in the stores have been very well made - tight, finish etcetera.
Long story short - I would recommend one without hessitation based on my experience with both my Colt 1991A1 and my Kimbers (extractor problems, finish), Springfield (most trouble with these), Para's etcetera.
Besides - It is a Colt! And the new role marks have a cool horse!