I have the following in my garage:
Soviets: SU-8, SU-14, S-51 (getting that one took me a while), SU-152, IS-3, T-43
Germans: VK 3601(love it), Tiger II, VK 3002 DB, Hummel (soulless and efficient farm and frag machine).
US: M41 (my precious), M6
I know, I spend way too much time playing this game. All I can say is that it is the game's fault, it is extremely addictive.
From what I've been reading the game is a massive hit in the Russian-speaking world. The game also seems to attract a very high percentage of 25+ yo players.
You might aswell wait for open beta to start this week. They are doing the server split right now so the EU players will have their own and North America will have their own. Can't wait to actually be able to talk to other english speaking people.