The problem is the E-50 is actually not very nimble at all.  It turns like a truck and I've on more than one occasion accidentally rammed teammates because the thing turns in such a huge freaking circle.  It has good pickup but it literally turns like the A-20.
The gun and the armor are both AMAZING, but i find myself angling it like the IS-4 which is a big no-no.  (squishy sides)  Old habits die hard, especially when my ammo rack gets hit. 
I love tapping things with this tank though.  Moving at 10 km/h into a T-59 and he loses 60 hp.  I use the lovetaps to finish off tanks with 10~ hp left.  
Ramming something at the full 60km/h going down hill and the other guy will lose up to 300 hp, lighter tanks will outright explode.