I like Empire, wish it were faster, but guns don't satisfy me although the bayonet mκlιes are very accurate, finally they stab each other!
Medieval 2 is good as well but the combat system confuses me. In RTW I could win half the battles with half the casualties. God knows.
And then there is Rome, pity about the expansions, never did like BI but Alexander is okay (what do you expect me to say, it's my second name
). But there is nothing more satisfying than taking conrol of the Legions of the Senatus Populusque Romanum and annihilating every stinking faction on the map (even better - sorry, harder - if you do it in historical order
.