The best engine gives better hill climbing speed but thats about it really. The damn tank just takes too long to get up to full speed. You are usually spotted and killed before you get to full speed which is not that fast. The grind does allow you to train your crew more. That is the only plus I can see.
The tank does fine when it's on the top tier and...
oh wait. Was fighting a leopard, got penned every single time from the front. I was too slow and couldn't relocate (rumbling along at 15 km/h) and got peppered to death. Funny thing is, I had to move out into the open to get a shot because I had no depression on the gun! It was a spot that I had used many times for hulling down in my M18...
This thing is fucking useless, I'm seriously contemplating getting enough free exp to just go through the tank, and I've never outright skipped a tank before, not even the A-20. I was hoping to get the turret and gun to see how this thing performs then but it seems like a miniscule upgrade, and the turret itself adds almost a whole ton to the tank and I shudder to think how much more sluggish this thing would get. AND i have to do 100k's worth of grind in this?? (and still need 14k for both gun and turret)