I currently run an MSD Digital 6 and have for 20 years. There is nothing wrong with it, but my father is building a new car and he needs an ignition. He'll pay me half the retail cost of mine and it would allow me to upgrade to a 7 series for a very low cost. Wondering for those of you who have run both series, or have run a 7 series if you think it is a worthwhile upgrade. I'm not at all interested in opinions on MSD products. So if you're an MSD hater or think a chrome box is better, move on by Tex.