I have been a proponant of efi since the 90's, and the older tune it as you go systems. They take a lot more work to set-up than the current efi systems.

I have had some really good carburators over time, and the efi is still smoother and much more drivable. The info/feedback is really aweome too. My first system was just too much info to take it all in at once and took time to learn, but the newer software is self learning when yu put the target A/f in, so the hard part is now eliminated.