As someone here who shoots Nikon, Canon, and Olympus, I can tell you that Olympus is the underrated gem. They have enough lenses and accessories for the pro and the image quality is outstanding. Despite the smaller sensor of the Oly DSLRs, their in-camera processing engine does such a great job in regards to image sharpness, clarity, and color, that they can hold their own against the two giants. Here's an experiment I did. I took the Olympus E-510 and My Nikon D80 and took a vertical shot of a house. I made sure that both cameras were on the highest quality jpeg setting and used the Olympus first to take the shot, filling the edges of the frame with the house. I then did the same with the Nikon. Since the image sizes aren't in the same proportion, the Nikon gave me a bit more on the top and bottom, but the house was still edge to edge the same. I printed a 12x16 from the Olympus file, and printed a 12x18 from the Nikon file, and cut down the extra two inches off the Nikon print, so that it matched the one from the Olympus print. I asked my pro photographer friends to tell me which image they liked better in terms of color, clarity, etc. Almost across the board, the Olympus one was chosen. There is more to image quality than sensors, and band reputations.