Wow, thank you both for very informative posts!
@
inkista: yes, that is my worry as well. I may end up just deciding to splurge and get a new XTI, but for now I'm just thinking about other possibilities.
Thank you for the website! That'll be a great place for me to start.
Yes, haha, I do mean shallow DoF.
What do you mean by saying that the 20d can be "a little long"?
Once again, thanks all for taking the time to read and respond.