Classic, because Classic is classic and Era is like a new era. I prefer the fair fights on Classic rather than Era's "who has the better gun" fights. I won a spar on Era and i was really happy I had 1-0. I joined again, and some guy destroyed me with a machine gun. No match for my pistol that did almost no damage to him! All in all, its based around who has more money to buy better guns. Then again, maybe its just because Classic came first, so I feel more comfortable playing it. I feel more at home. Classic will always trump Era in my book!