Brand should not matter... and to a good photographer, brand does not matter. The camera isn't taking the pictures... the photographer is. As long as the gear is adequate the photographer will handle the rest. Both brand's are adequate. This isn't to say you can't find one feature and say "I like the way brand X implements this." But at the same time you can pick another feature that brand Y handles better. Neither brand has a shortage of good photographers using their gear. The OP was asking for advice on accessories other than lenses. I think I counted four different L series lenses in Ken's signature... he's probably got good glass mostly covered for now. Tragically, Ken's thread was de-railed by a brand-war debate.