Thanks for the help. I really appreciate it. I am definitely leaning more toward the 10D, and mainly because of the Al Servo. I use Al Servo for most of the pictures I take. The attached pictures are ones I shot with Al Servo using my Canon Rebel G and a 70-300 f 4.0 - 5.6 lens. The money I've spent on developing alone will more than make up the difference of $500 for the 10D. I'll probably have it by the end of the week!

One more thing... John - you said
But with the EOS 3, the 10D, and the 1D, with the right lenses, AI-Servo allows you to lock right onto your subject and track super accurately.
I have two lenses right now, the 35-80 that came with my Rebel G, and the 70-300 (mentioned above, made by Quantaray) that an ex bought for me. Both seem to work really well. However, I'm thinking that with the 10D, the quality of those less expensive lenses will be more apparent. What do you suggest I look for in a lens that will be good replacements for the ones I currently own that will work well with the Al Servo? Should I stick with Canon lenses or will the other brands lenses work as well.

Thanks again for your help!