ITTY BITTY LITTLE KITTY (In early 1942!)

[PoorOldSpike]

Yes the up-armoured PzIII is a tough little s.o.b but to make sure you're getting the right one at the buy screen, run your cursor over the III family until the '70mm-armour' readout comes up as below on the left, otherwise you might buy a crap 50mm-armour version by mistake.
(Oh and noobs - make sure you're buying the one with the L60 gun at the same time, not the short L42 peashooter)

ALSO (roll drums, sound fanfare!) - you can buy the Stug IIIF (late) in May 42 (below right) which has 80mm armour and can't be penetrated by T-34/76's or KV-1's whether hulldown or not, AND it has a wicked gun that can easily wreck T-34's/KV's.