M3B Pro's Uses Coax (New or old) Uses Coax Splitters for signal Distribution (not expensive Network switches) Easy Cable termination Up to 50 sources to an unlimited amount of displays Small size Can be powered by USB Great Price per unit 95% Blu Ray Picture Quality Moderate System Price Great Support
M3B Cons Only supports PCM 2 channel Audio Does not return IR commands to source Takes about 8 seconds to change source
JAP (from what I know) Pros 256 Sources to unlimited displays Returns commands to source Supports Multi Channel Audio Quick(ish) source change Great Support
JAP Cons Requires expensive Network Switch Requires good quality termination practices Expensive System Price Large(ish) unit size
PS: I am sure that I missed Pro's & Cons for both systems, dealer input (for both) is wanted.