Welcome to the forums glwrench.
I talked with Paul of C5ignitions for over an hour yesterday.
I'm VERY intrigued by the system and plan to install one on my 1100 with 1000 cams in the next few weeks.
From what I can see and my understanding is its the best ignition system available to us today.
I'm anxious to write up how my install goes and review the product!
I'm hoping Paul can make it to our meet in French Lick Indiana August 3rd and 4th.
Your invited too of course.