Thank-you for the responses.
!@#$ Oh well. I guess I sgould have ordered in along with the rest. I was almost ready to click 'add to cart' when I noticed the 'recommended to be used with a rotary polisher' so I didn't order:
Optimum Hyper Compound
I'm fairly new to polishing and w/o going overboard I'm trying to have the appropriate combinations on hand, so for example, I'm not pushing a finer polish on a cutting pad to do a job that really requires (or would be easier with) more agressive compound. I may even eventually get a rotary too...but I want to get real comfortable with the PC 7424 DA first and there are so many combinations of pads and polishes/compounds. This whole polishing thing seems like one of those combinations of art and science.