Obviously, there are a lot of threads on which camera someone should buy. Here is the reverse.
I have a 50D. I purchased a 40D with the intentions of converting it to IR. After I got the 40D I decided it was to nice of a camera to convert and probably wouldn't do as much IR as I originally thought. So, I have two very similar crop cameras.
I just got a great deal on a 5D (classic) so one of the crops must go.
Which should I send packing? 


