The new Canon EOS 50D and the Nikon D90 are hot–and affordable–digital SLRs for advanced photographers. But which one has the best bang for the buck? The debate is on.

High-end color calibration and print-profiling tools used to cost a pretty penny and required a learning curve that few photographers had time to deal with. Not any more.

Decent digital projectors now cost under $500, but is a DLP or 3LCD model better for showing photos?