Just a little update here.
After running 5 or so cycles through the MM Pro in the e maxx running a HV4400 with sinter rotor/5mm shaft, it was time to move them to my E Revo.
My E Revo is setup with:
MMM ESC
Medusa 36-60-1500 geared 22/40 using Mod 1 gears.
This is more of an amp hog than the E maxx setup.
The packs handle the E Revo just fine. They have alot of punch.
I've ran them in the E Revo 4 times now. Two of those times were both in the same hour today.

20 amp charge rate.
They come out of the E Revo about 100 degrees. Still not bad, but this does show they are being pushed harder.