Now that I have your attention on a much-discussed debate, I'm looking for a little bit of info on lenses to help me with my decision. I'm looking to buy my first DSLR. Right now, it's between the Rebel XT, and the Nikon D40. If I go with the Nikon, I already have all the memory cards I need, so that's a plus. But to have all the functionality in any lenses, I have to buy the newer AF-S or AF-I type. For autofocus, the D40 doesn't have the mechanical pin that turns the lens to focus it, etc., and for some of the other lenses I lose metering. So I'm somewhat limited in my choice of lenses if I choose the D40. But all you guys know this already. For the Rebel XT, I can use pretty much any lens Canon offers, right? From what I understand, (with a few exceptions) most lenses work on most cameras, the Rebel XT included. From some of the online stores I've browsed around, I can get some of Canon's lenses for a little less money. The only downside is I have to buy memory cards since it doesn't use SD..not that big a deal. So my real question is, is the difference between Nikon and Canon in this area any better for either? Another question I had was, if I choose to upgrade my camera body later, will the D40's lenses work on, say, a D70s? I haven't been able to get a straight answer anywhere, but maybe my internet search skills stink. This part is important to me because as I progress in skill with the camera body I start with, I want to be able to use the same lenses on my new camera body so I don't have to start that investment all over again. Thanks!