SBEII

Whats the difference between winches with 2 stage planetary gears and 3 stage? I'm interested in purchasing a Superwinch and it seems most of the new ones have 2 stage gears. I was going to pick up a later model with the 3 stage gears but I don't know if it'd be worth the money to get a new one with 2 stage? There seem to be too many choices out there!