In the past I have been a big fan of the Sid Meier Civilization games starting in 1996 with Civ2. However, I've heard some some state that with the Beyond the Sword expansions installed on Civ 4 it is superior to Civ 5.. (I have BtS) I also heard the game has lost a lot of it's former depth and complexity. So should I shuck out 50 bucks for the newest version or should I stick to the beauty that is Civ 4?