Hot Rod John, I'm curious if there is much difference time wise between the sanding disks and media getting down to bare metal.
6 of 1 - 1/2 a dozen of the other or what?
It depends on the quality of the equipment you are using. I have an 80 lb capacity pressuried media blaster I use with my shop compressor. The Norton strip discs are quicker.
Back when I sandblasted my Model A I rented a commercial style blaster. Basically a v-8 engine, 4 cylinders as a compressor, 4 as the motor to drive the compressor. It stripped quicker than the Norton discs.