I am looking to get into a full frame camera and have been reading lots of reviews and articles and the more I read the more I am confused. I am shooting with an XTI now and have several good lenses. I will be using it mostly for portraits and want the larger sensor to get wider angles from my lenses and perhaps better picture quality. What is the best "bang for the buck" Canon camera. I would like to stay as far below $2000 as possible. I am thinking that the 5D would be a good choice......any opinions?? Thanks!