I have a bunch of them, all different brands. They all work about the same. The flat lake county pads work just as well as any of the other pads I have, they are just an outgoing design, hence the sale. I think it's best to have at least 2 "course" pads for compounding, 2 "medium" pads for polishing, and 1 or 2 soft pads for wax/sealant if you don't want to do that by hand. If you try to use one of each pad type for the whole car, it will load up and dust all over the place. Not the end of the world, but just creates more work for you after each polishing step.
Of the pads on BOGO on autogeek, if you have no other pads to start with, I'd recommend at least 2 yellow or green (compounding), 2 grey (medium polishing), and 2 blue (fine polish, waxing). $5 is as cheap as you will ever find them, so might as well stock up now. They usually run $10 or more each anywhere you can find them.
Here's the chart for the different colors:
Learn how to use the Porter Cable 7424 dual action buffer with CCS Smart Pads by Lake Country. Polish swirl remover car wax polisher wax buffing pad The CCS pads are the same as the ones on BOGO, only with little dimples in them (which functionally make no difference).