Wow, thanks for including me. I use a Canon 30D. And I have to agree 100% with what Ed said in his response below. A good camera doesn't take good pictures. It really is all in your eye, and practice, practice, practice. I've had my camera for 7 months (and have squeezed in two trips to WDW since), and like Ed, I'm still very much learning how to use everything it can do. I had a pocket camera for a couple of years before getting my 30D.
Thank you!