Quote Originally Posted by flintlock62
Yes, I realize a 50D is over kill, but I do want a camera for actions shots. Maybe I should just buy the cheaper camera and buy a better one when I have more money. Or, maybe I should buy what I really want in the first place. Decisions, decisions.
I've used the XSi for plenty of action shots, too. Here's a gallery with some of my XSi photos, including a photo action photos:

Photo-John's Canon EOS Rebel XSi Gallery >>

The 50D will give you more speed but overall I don't think it's a whole lot better than the XSi. Frankly, I was a little disappointed in the 50D after the 40D. The EOS 7D is a completely different story. I love that camera! But if you're just getting started, it's a reasonable strategy to save money on the body, invest in better glass, and work on your technique. I think the XSi would be a fine place to get started.