Play it regularly, although do not see myself leaving my current clan as I've been here for such a long time and enjoy playing with the people there.
Have to say though, that the constant "Germans were bad, so they should not have good tanks"-thinking WG is using is starting to piss me off somewhat, so not sure how much longer I will keep playing. Guess I'll stop when my JagdTiger is hit by a nerf...
I do however not agree with H_Balck, it is very doably to make a surplus with a T8 tank (T10 is currently max), but it requires you to know what you are doing. With a premium account even T10 tanks will usually net you some credits. But, I will also say, that for a "free" game, I've never spent so much money on a game before hehe.
But that is mainly due to ClanWars where gold ammo is required. Not so for random matches.
So, I agree with Pelton, if you have some spare time, and want to blow something up, nothing feels better than jumping into your trusted PzIV and blow holes in a T-34 (well, with the exception of crushing pesky auto-cannon French tanks with your so called obsolete Maus that is )
"Hun skal torpederes!" - Birger Eriksen
("She is to be torpedoed!")