I agree with Mr. Sorensen except on the cons of the Glock. With the exception of the sights, I hate Glock sights. Novak, Ashley or Trijicion are great on a Glock though. Every day there are more and more aftermarket parts for the Glock. Check out
http://www.glockmeister.com to see a good many options. Also
http://www.robarguns.com for the high price custom jobs. ( I myself prefer the Glock the way it is, but to each his own) They are ugly though which I don' t mind. Thier work horses and they do very well. Though some people do have problems with " the feel" of the plastic. Each person has there own tastes. Both are fine weapons as long as you buy the 1911 from a good company i.e.,,, Kimber, Para, Colt, Springfield etc... and not from Llama, Charles Daly, etc...
Try and hit a range where you can rent one of each and see which one feels right for ya' .