Ah.. I'm sure most people know this already, but the current T34/76 can kill Panzers at almost any range* (hit the turret), can one shot kill M4s at short range (with HVAP hit the sides or rears of the hull or turret, not the tracks, at ~90deg or hit the center of the rounded area below the glacis when head on), and can even one shot kill Tigers at ranges below 500 (with HVAP hit the side of the turret or side of the hull at 90 deg, it has to be a near 90 deg shot).
That being said, I am sure looking forward to the new T34/85: better gun, faster loading, same good speed, same good hull armor.
*as a reminder, don't use HVAP at ranges beyond about 1200. It isn't as good at long range as normal AP.