So I am thinking of carrying around another body. I have a 40D but really don't want to pay for another one. Should I pick up a used (or new) XTi or try to find a used 20D. Kind of kicking myself as I sold my 10D when I bought the 40D. I think that the battery compatability alone knocks the XTi out of the picture but I am looking for your advice.
Thanks



