[olddog]

I like EFI. It is expensive, so you want to buy the right setup the first time. Not all EFI is the same. In my opinion, throttle body systems are not much better than a carb. A lot of aftermarket stuff is aimed at drag racing. They are set up for Nitrous (or however you spell the laughing gas). These systems sell to a crowd who mainly care about idle and WOT. They don't much care about driving around on highways.

Personally I like Mass Flow based systems. They are theoretically superior. I believe all current manufactures have gone to it to meat the ever tightening EPA and mileage requirements. Do your research on this subject, too.

Realize that EFI and Cam choice are important considerations, when you build the engine.