Which Referral Premium to choose? (Commander)

Zapfhan: As you want to farm credits I would recommend a tank that checks the following aspects. Cheap rounds good penetration Gameplay fits your preference   1121,025 Credits for the AP is on the higher end for the available tanks 186 Penetration can be enough for many tanks but as soon as you face more "brawly" heavy tanks it won't be enough. The gameplay in my opinion wouldn't fit the tanks you played a lot on your account. Its more close up and tanky thus you will be quite exposed to a lot of fire.   AMX M4 1,030 Credits is the highest of the 4 candidates and an obvious downside. 232 Penetration is also the highest and thus quite comfortable to play even when facing some higher tiered tanks. The tank is quite slow and has not the best gunhandling thus i am not sure if you would enjoy to play this tank a lot for credits.  T26E5 255 Credits per shot is super low cost even for only 240 damage per shot. 230 Penetration is more than enough to deal with most enemies you will face. The Jumbo Pershing is armored enough to play the heavy role in tier VIII battles and mobile enough to join medium tanks if you'll be on the lower ranks.  FV4202 680 Credits is not as cheap as you would wish for a medium tank gun. 226 Penetration on the other hand is quite nice to have. The Tank would kinda fit the play style of the Schwarzpanzer you already have.   My choice in your situation would be the T26E5 as it is an Allrounder that can adapt to many situations.