If money is no object, which it shouldn't be for a CCW. I would still not get a 1911. Your best 1911s are great pistols but the bottom line, TO ME, is that you spend the extra money for tuning and fitting that you hope will make it as reliable as a Glock, H&K, M&P, 3rd Generation S&W, SIG, FN, or an XD. The high end 1911s will have a short and crisp trigger, and be very accurate but neither is the most important thing in a carry piece. I would suggest you truly make money no object, as in "more expensive doesn't mean better" and try a variety of pistols that fit your criteria and find one that fits you well and is comfortable to carry. If you like your 1911, except for the weight, explore some of the alloy framed 1911s mentioned above. If you aren't 100% sold on a 1911 I would try the others. My personal first pick if I wanted a 45 acp would be the M&P 45c or even a M&P 45 service size. It isn't really any larger than the 1911, is lighter, and carries nicer on the hip. I've carried my M&P 9mm fullsize with 18 rounds and it carried much more comfortably than a steel framed 1911. I've found M&Ps to be very reliable and supremely easy to shoot well. I paid about $500 for my M&P 9c and there is nothing I would have gained by spending 2-3 times that amount. A lot of people really like the Glock 36 as a compact and slim 45acp carry gun. I don't blame them one bit. I even owned a XD 45 for a while and if it was the compact I would probably still own it. It was a tank and totally reliable but the grip was a little long for my taste. Another option to try out is the Ruger P345. Its slim, accurate, reliable, and about the size of a Commander 1911.
I still lust for a Dan Wesson or a Wilson Combat but when it comes to a defensive weapon I just don't honestly believe they are that much more capable as a defensive weapon. People love the name, the accuraccy, the fit and finish, etc......(me included) but there are plenty of guns that throw lead just as reliably and one of them might just be a better fit for you. The real question is to find out which weapon you will defend yourself best with, not what gun would you buy if you had the money to buy it, which seems to be the answer a lot of guys are giving.
The answer for you might be a $2500+ 1911, but if you don't give weapons like the ones mentioned above you will do yourself a real disservice.