Tank used: T57 heavy
This is a hard one because you have to win the battle to get in the top 3 in xp. I do think its easier to get high xp with scouts but with all the wheeled tanks around now its likely that a suicide scouter will spot you and you die. Then there are city maps, here you will probably need tracking shoots and thats not so easy. Because of this I tried a tank that I could affect the outcome of the game in secure way and that works well in city maps too. You need to be in the frontline because if you dont spot the target you shoot on you wont get the full xp.
Good luck to you all