I have an accuspark red coil on mine and have had no trouble in the two years it has been fitted.
I do carry an old coil as a spare for when it does give up the ghost, I ran the car on the old coil for a couple of weeks just to make sure I am not carrying a dud around as a spare.
I also have a spare distributor fitted with an Accuspark kit in the boot for the same reason. plus a spare SU fuel pump just to be sure.
Now I can safely guarantee it will be none of those things that lets me down in future, it will be something else I havn't thought of.
Phil P