How many MMM's work and how many dont?

[E-Revonut]

My v1 died after about an hour but I'm pretty sure it was my 8xl that killed it, not CC's fault but they replaced it with a v2 that I have about an hour on now with no problems since I got it working. Had a problem getting it to work at first because I had to update the firmware, since then no problems running with a 1515 2.5d Tekno Neu on 4s. Fan only comes on at startup, highest temp it has seen is 127* and that was running through tall/thick grass.