When playing BattleTech, we found that we had the most fun playing mechs in the Medium to Heavy range. About 50-75 ton range. Big enough to be versatile, but still small enough that you had to make choices. Also, this was original tech, before all that ridiculously overpowered clan tech got added. The game seemed to have a lot more strategy when you had to make a lot of decisions about how to manage your weapon fire and heat load.
