ITs really preferance.......i have had 2 cars now that have been carbed and daily drivers(not stangs) a '64 Impala lowrider, an '84 Caprice lowrider. I never had problems with either car leaving me stranded or anything like that, and real easy to fix! And obviously with EFi you can have more electrical type problems(sensors and all that crap). EFI will get you a couple more MPG, and easier cold weather startups but thats about it. I just like a carbed setup cause what ya see is what ya get, and the engine bay is clean as a whistle! my 359W is gettin an 850 Demon, and ill still drive the car to work a few days a week. Its all about what you like!