I'm in the same boat, and about to order EFI. I was sure I wanted the Fitech unit when I first started researching. However, after all the research I've done, I've changed my mind to the Holley. Both use of the shelf sensors, but I'm more concerned with parts like ECU's and controllers in 10 years. From what I've found, their tech support is second to none. For an extra $100, that's worth it to me.