Flex 6600 or 6600M. Am almost new in the world of Flex. I doubt between a 6600 or a 6600M. I already own a maestro. I would have liked to know what the big differences are and whether the maestro needs to upgrade to have the same features as the M version. So please give some clarity in this new discovery. Everyone talks about the M version. Am I then wrong to take over a colleague's maestro to use it on the 6600 version? Thanks and best 73 '