Can anyone recommend a (good-enough-to-sell-prints) process for outputting digit al black-and-white print files? I'm looking for quality that will rival at least an excellent warmtone RC print (I understand that the texture of fiber-base is currently not realistic). I thought the LightJet system would deliver, but servi ce bureaus who brag about their color LightJet output have strongly discouraged me from trying b&w LightJet prints ("weird tonalities"). Any advice? Concerns ab out longevity? Thanks.