People dropping FI setups like hot potatoes

I have a Fitech on My Mustang, does pretty well. One of the problems I have seen is it's not as plug and play as their made out to be, that's been a put off for a lot of people, trying to adjust multiple AFRs vs a couple of air mixture screws is totally different, just like the Holley vs Edlebrock debate, there will be a carb vs EFI debate, one thing for sure is with failure there is more to chase with electronics