They don't do anything special that you can't achieve with an MSD for much less money. They always compare these things to old-as-dirt Mopar controllers vs actual modern competitors.
I like the MDS stuff too but I think the Rev-n-ator is more for guys that want to keep the stock look. I always ran MSD in my race cars, my current street car has a Pertronix IgnitorIII billet distributor, it is literally a 2-wire hookup plus a power wire, and has a built-in rev limiter. It works great but it required grinding alot off the Eddy RPM cylinder head to get it to fit.
