Got my 75mm on the M2 medium fully kitted; my crew is rubbish still but I got four kills and the win! So nice now I can kill traktors with one hit and damage anything (well only slightly) I come across.
The tank up from the BT-2 is not bad but I think needs upgrades; you're one tier up with not a huge improvement. I still want to be able to afford a camo cover and scopes.......
Been playing too much so my missus has banned me for tonight.