Yay another one of these with all the usual suspects I see. Well I can't really give an accurate comparison since I haven't used a fast system and I haven't used mpf so I can't say it's better or worse than the tools I used. I have one complete fully functional game made from scratch powered by P-roc called deadpin and another made with the P3-roc that is just about in the testing phase. Connecting the boards is simple and fun. Really easy to be neat or should I say gives you the choice to be neat . My first machine was written in pyprocgame. I am not at all a software guy but I was able to write a set of rules pretty quickly. If a had a problem I just asked and got an answer pretty quickly on the forum. The community is strong that's for sure. Lots of smart. Capable builders and programmers ready to help.