I'm still stuck on M/M, at least I was for the last campaigns I played. I do manage to actually suffer some humiliating defeats at this level, so I believe this difficulty level suits me just well. In my last Macedonian campaign my main advancing army, led by a promising youngster got utterly trashed before the gates of Roma by a combined Julii/Senate force, and the young general got by the Roman general's bodyguards, so I guess this difficulty setting is enough of a challenge for me But this is mainly because I don't play that often (anymore) and I've never been a hardcore gamer anyway (at least not in the way that I'm looking for a challenge, lol).