So, found this guide on engine tuning...

Solid state electric is better in almost every way. But like anything can also be prone to sudden complete failure. On my other cars I use MSD which is a solid state system. But if the MSD dies at a show, or on a cruise, it's no big deal. If my plow truck dies, in the middle of a storm and I can't get home, or in or out of my driveway (which is shared), I'm screwed.