well yea, I gotta admit it. M4 along with Easy eight are my favourite medium tanks.. Very good refire mixed with speed is what they need.. Get on KV-3 arse and they'll have some trouble..
Heck, one of my best games with E8 when I simply didn't care about anything, did a simple rush and well.. It ended up me going on killing spree..
And the 105mm derp on M4. Wouldn't change it for 76mm even if I was supposed to die.. This thing is epic at fighting both much higher and similar tier tanks.. At least you don't get the annoying 'that one didn't penetrate!' when fighting tier 7-8s..