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www.kenrockwell.com has good reviews of DSLRs, he shoots mostly Nikon but has recently been shooting with Canons as well.
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QFT, /thread. Go to the "Technical" section of his webpage, and you'll find many articles that will answer all of the questions about your specific situation. This guy really knows his stuff, but just as important, he's not some snooty photography buff who looks down on any point&shoot. quite the opposite, he's very no nonsense, use whatever works, type of guy.
That, and dpreview.com can be helpful too, but that I think mostly for reference information and such.
-bigbootch