I had a Mobelec system for many years on my MGB, then one day it let me down on the road. I was only about three miles from home and I managed to coax it back, but the problem was disintegration of the plastic components due to age, after about twenty years so I can't complain.
I replaced it with Lumenition because I had that on my V8, but within a year it failed. I think it was replaced under warranty, I just don't remember, but in the end, I went back to points on the MGB.
