Fuel Air Spark Technology

Has anyone had any experience or heard how well the Fuel Air Spark Technology, (FAST) systems work. I am considering getting the duel quad EZ-EFi system for my 512 stroker. I'm tired of messing with the carbs. There web site does a good job with all there information but I believe actual real word experence says more. Any help or opinions would be great. here is there web site address http://www.fuelairspark.com/

Thanks again
Brian