IMO the MMM is still as reliable as Tiger Woods in a bordello. Do a search on MMM and fire and there are quite a few results, despite the pr "spin" that's peddled around, there is an increasingly long turnaround time on MMM repairs.
I credit the MMM solely for me giving away the whole 1/8 electric game, it's no fun going for a bash with a remote in one hand and a fire extinguisher in the other.