Have not used that particular board, but have several other PinballPCB boards and displays. They make good stuff. No issues with the products I have.

Kohout system 3-7 driver / mpu boards are nice. I havent seen their sys 11 stuff, but i'd imagine it is also nice.

I just bought a system 9-11c board, power supply and flipper board from Jeff and they all work great, plug and play , these guys are great to deal with, always answered my emails and they were very helpful, they also included a small board that they designed to plug into J7 I believe , it gets rid of the humming noise when the game is on, it works great , my space shuttle is very quiet now when it is on, they have great products and customer service

haven't used/seen the system 11 boards but am currently running a set of their system 7 boards in my joust. fantastic product. virtually bulletproof.

there are a nice set of manuals shipped with their boards as well (w/ a full set of schematics)

I have them in Stellar Wars, Blackout, Defender, and Cosmic Gunfight.
Work great, no issues in over 6 years of use.

Got their Sys11 PS and Flipper board. It's just a preference but I like them over RD. The documentation alone does it for me but throw in a dial for voltage viewing and you got a party!