I have used M-PC for several years now. It's very powerful and the M-Touch/M-Play surfaces give you at least something for your hands for thousands less than other wings. That said, any lighting package with any amount of capability has a significant learning curve, as you need to learn not just what the buttons do, but how to think and how to have a functional workflow. The M-PC community is pretty large and there is a lot of help available via YouTube, but anything you pick will require a significant time budget with your rig learning how to run it.
I installed it at my church a year and a half ago and setup a bunch of pre-built groups and palettes as well as submasters to run the house conventional rig. People are still making errors - accidentally recording groups over each other instead of cues, etc. This isn't a flaw of M-PC as I'm confident they would do the same thing on any other package, but I mention it to set expectations that it's a skillset that requires an investment.
