I've spent the past three days debating: XTi vs. switching systems. I know the XTi is a damn good camera, but I can't shake that it just doesn't feel right to me -- something I find quite important. Not excited between switching systems, I must say that I found both the Olympus E510 and Pentax K10D intriguing. After reading several reviews, and looking at many images (thank you for your contribution to this, John), I must say that the Pentax really stands out.

The main issue I see with the Pentax is the purple borders it creates on several images I've seen. On that note, however, I don't foresee it being too big of a problem for me. I found the K10D for $611 after rebate, including the kit lens and a 2GB card. I'm sold.