I say MSD is so-so because their products suffer from poor QC, as others note, and their support is not so great either.

I've had an MSD 6 AL that would 'stop' all of a sudden, then 'start' again, all while I was sitting on the side of the road. I sent the box back and they charged me $50 to 'fix' it. I asked if they found something wrong and they said 'yes'. I asked what and they said (get this...) 'whatever it was that was causing it to stop working'.

Sure enough, I continued to have the same problem, only my wallet was $50 lighter.

"So-so" is what they get. When they move from Northern Mexico to somewhere where electricity is understood they might get better.