I know this probably going get something started but for the record I have been racing for over 20 years and I have never had a msd unit fail me and cant really think of anybody I know that uses them have a failure either, however on the other hand I have had a mallory box fail on me on one of my cars and it was only a few months old, and dont even get me started on their picky modules that are always going out, but I do like their promaster coils.
I think petronix makes the crane and the former holley annilator units along with a few other namers. So save some dough and skip the name game and buy direct for the manufacter if you just have to have a crane STYLE box.
They all are just copies of the orignal boxes msd pioneered years ago except most are digital now instead of analog. Only ever professional dragracing team uses msd. Just my opinion Charles