I have looked at Haltech, AEM, SDS, Holley, etc.
The best bang for the buck seems to be the Holley Commander 950, no provisions for SFI with anything more than 4 cylinders, but the windows based programming is nice and the features it has is pretty good.
Haltech was always a favorite of mine, especially when they introduced the E11, being full SFI and sequential ignition capable on engines up to 6 cylinders, either as full sequential for more cylinders. The price didn't seem too bad either, much less than a sequential FAST system.
Why are you looking at using aftermarket engine managment? If you invest a little bit of time doing the research the OEM ECM can be made to work VERY well.
