Let me start by saying that this is my first visit to the forum and am very impressed! I would like to upgrade from my Canon 20d. I am looking at the 50D and the 5d. Knowing that the sensor size is the main difference (at least that is what I am thinking) what other things make set the two apart. I am leaning towards the 50D as it seems to have all the things that I need/want but at this price point, I can also look at the 5D. Please help me understand the differences and what your opinions are. Thanks in advance!!