In my opinion, you should get whatever management system your tuner likes because the end result is really the big point here. From my understanding, AEM is weird/different in certain ways but if a tuner has worked with it enough, it's a good system. Motec is baller status....that's all I know. Never knew anyone running it but I don't know ever car's set up at the track. It's nice but brings us back to tuner's comfortability. I've got Hondata....it's enough for my needs but I'd like to have a standalone like AEM.....with their display and such.