I’ve raced thousands and thousands of miles through the Mexican desert (read; dangerous) and the ONLY box I want on board our truck is the MSD 6. We have two boxes for redundancy and in 15 years of racing, never used the spare.
you are lucky...i have had to rescue soo many friends in the past cause of msd parts.. BUT that was also a long time ago... I will never have anything that needs a better ignition.. so moot point :)