BRUCE- Honestly, the Vec-1 is the best choice at this point it seems. Mainly, this is due to the fact that with a "burned" PCM, you will have a set fuel map, and in order to get the most out of your engine, you need to tune it to use the highest octane fuel in your area. Now, what if you cant get that fuel at some point? putting in lower octane is a bad idea. However, with the Vec-1, and soon the Vec-2, the controller is adjustable "on the fly" via knobs, or a card. This way, you can de-tune and still drive in ****** CA that only has 91, while also driving the same car in (well, STILL ****** NY) which has 94...and get the most out of it in both places safely.