FBO or MSD what do you use?

MSD digital 6, digital 7, is on the top in most choices of racers, no brainer, NACAR and down, Pro-stock and down. It is what most are using. I personally use a Digital 6 on one car the rest have 6al's. MSD digital systems allow a locked advance in the distributor. The system gives you the 20 degree initial retard so a mechanical advance is not needed in the distributor. Also rev limits and 2 steps are able to be dialed in on the control box. I will always use MSD.