Are you referring to the latest fad in automotive fashion which is to sport a TBI EFI system? The Car mags have been pushing them as the greatest thing since sliced bread. But then the Car magazines are paid by the advertisers to push things hence the "fad" moniker. What is in fashion this week, but is gone the next.
I might point out that the factory moved from carburetors that were vacuum driven to electric actuated carbs that were computer controlled, to a TBI EFI system over time, because the emission requirements imposed by congress where tightening annually. The factory had to lean out the burn, add catalytic converters, and jump through a bunch of hoops (solenoids and adjustment lock outs), to get the car to run at all; because they where so hobbled bt the emission requirements.
During this time Holley carburetor, sales took off as people who lived in states with out annual emission checks ripped off their TBI units and replaced them with a carburetor and non-computer controlled distributor. If you didn't want to buy a Holley, a Rochester Quadrajet bolted up to the TBI manifold because all the factory did was to put a heater under the twin injector TBI. When you pulled the TBI and the heater off you had a low rise (Corvette) QuadraJet EGR equipped cast iron manifold staring you in the face.
It wasn't until we had TPI (Tuned Port Injection) that EFI started work as well as a carb; though today TPI has been superceded by direct injection with variable valve timing on top of ignition curve timing all controlled by a programmable computer. That system on a LS-x motor is hard to beat with a carb, though people try it just to look sort of old school.
A carburetor will out perform a TBI unit at a fraction of the cost, in every test except ease of start up. It will allow you to use a far more radical cam in your build (TBI is MAP based and as such is very sensitive to any variations in manifold vacuum). TPI is MAF based as are all of the factory EFI systems today.
And a carb isn't sensitive to changes in altitude. (if you tried the Pikes Peak Hill Climb race with a TBI fueled 454 it would blow up before it reached the top because it would be running far too lean). Chevrolet issued a warning to all service departments to owners of 454 powered light trucks to have the computer changed out before attempting to drive above 3,000 feet and to have it changed back when you returned home if you lived near sea level; such as I do in Florida (though I used to drag a camper trailer up and down the Rockies, Seria Nevada, Cascades and Olympic ranges on vacation).
A TBI is just a way over priced electronic carb that is very restricted in it's use, Luckily advertisers and marketing people can convince you to buy one if you have a polo player embroidered on your shirt (or an aligator) or any other brand name shirt or shoe or pants that are considered to be high fashion.