I just have no desire to own one. I value simplicity in my car because I drive it once a week. I'm not the guy who would go out of his way to get a DBW setup for small benefits, my car doesn't even have a headliner in it right now hahahaha. I'm more than happy with my dead simple EFI system. It idles perfect, runs perfect, gets great mileage and is very reliable. I chose the micro because it doesn't need a maf, is tiny, is cheap, has free software, is easy to tune, is designed to be tuned, and allowed me to learn a ton about EFI. The IAC on my car was a bit tricky to tune but didn't take me much more than an hour of playing around, 15 mins here and there when the car was cold. The micro is for someone who wants a dead simple EFI system, but is not for everyone. The GM stuff works great in a ton of applications, I just personally decided against it.