Have MGM worked the bugs out of their controllers yet?

Yes i've send mine last winter for the SW upgrade, now i've 3.21 version in it. MGM have return me the controler with the CC_03 cable to be able to download futur version directly by my computer.
But i've only ranit on 4s with mechanical brake for now.
I've an e-revo that i'am to convert with my brushless stuff in it and i'll be runing it on 6s. But on the e-revo i can't use mechanical brake.
So i hop that my 16018 will hold up fine on 6s with motor brake