Another "Is Fuel Injection a Worthwhile Upgrade?" Question

I have ~250 miles on an Edelbtock Pro Flo 4 on my 427 Windsor in my Mach 1 and it just works well. This coming from a witnessed dyno tuned Air Gap/Quick Fuel carb/Pertronix II combo that worked "well". Throttle response is night and day as is the roll into throttle. Seamless... I was out today letting it learn after a couple of tweaks with timing. Idling in 1st, 2nd and 3rd it just gently rolls. Stomp it and it just goes, immediately. I'm sold though my 70 Dart Swinger will likely never see it. The Mustang is my tweaking car.