So I currently have a 50D as a crop, a 5DmkII and a 1DsmkIII. I am considering getting rid of my 50D for a 7D. I don't know if it's really worth it though considering I have my other two gems. What would you guys do? Waste of money? I really like my 50D but I can't get over reading all the great reviews of the 7D.