I have $500-600 (or will by the end of Christmas), and I'm looking to spend it. I'm considering a DSLR, possibly the Canon D30. I have some questions, though. Overall, how is the D30? From the reviews it's ok (aside from the white balance)...is it that much of a problem? What's a good entry level lens for the D30? How much would a used D30 + entry level lens go for...$500-600? What is the picture quality like? Thanks.