I had purchased a set of diamond resin-coated disks I seemed to have worn out my 100 grit pad, I was wondering if the electroplated 100 diamond grit pad would be a better choice. Would the electroplated pad out-work the resin-coated disk and be cheaper in the long run for me?

Resin diamond pads are really meant for cleanup after a surface has been ground with an electroplated diamond pad. Even in the 100 grit, a resin diamond pad is not as aggressive and will wear very quickly if used to grind through material rather than clean up already ground surfaces. You'll definitely want to move to an electroplated disk for your initial grinds and then clean up with resin based disks.