Only the cheaper Canons, 300/350 D have a lot of plastic. The 10D, 20D, 1D etc are solid with Magnesium Chassis. The hype about plastic being inferior is mostly generated to justify higher prices, would you really like to drop your DSLR to see whether a plastic body survived better than a metal one?? Celestron and Meade are now using Plastic in their optical tubes, less expansion, more rigid and lighter.
