I did see that set. It's on my list of things to get.
I see in my future getting a merged set of ROMs to save download time and creating my own non-merged set afterwards.
Do you think my 9 year old PC might be powerful enough to run most games on the latest MAME? I know it is leaps and bounds ahead of the Pi, but I don't know how PC processing power compares to arcade hardware.
EDIT: Forgot the age of my PC