For the money the Medusa's are the real deal! Megas are nice motors but price is getting up there. I just ordered my second Neu yesterday, only reason was I couldn't find a 36-60-2000v2 in stock, so I got a 1512/2.5D that I was able to find in stock.

My pick order would be.
1 Medusa
2 Neu
3 Mega

I found it amazing that my 36-50-3300 runs cooler than another guys 10XL in a maxx our ESC's were very close but he was hitting 160f(mid 70's ambient) while I hit my highest peak temp today @ only 130f(high 60's ambient). His truck is heavier but I think mine looks a bit faster. We are both running 5s A123's so run times are pretty close also.

mowed the lawn for the first time this year, wish my buddy would have showed up with his radar gun. I was definatly getting more speed today, I hit my ditch jump wide open and cleared the road by a good 15-20 feet. By far the best launch I've gotten so far, the hang time was long enough for me to start having second thoughts;) Ya, a 36-50 would never be enough for a monster truck LOL!