SU-26 is a tiny spiteful machinegun artillery of death to lights and mediums and surprising feats if you backstab with it (which is very possible seeing it's tiny profile and TURRET WOOHOO). I keep a single gold shell in it for just those occasions - my only fadin's medal (kill the last enemy with the last shell in your tank) was with my SU-26 against an IS who trundled right past me only for me to lob my final cursed shot into his engine, burning him to death.
As for lower-ranked matches...
I got the former set just now, and the previous some time back. Fun stuff!
Ah, my thunder! It's been stole'd!