Certainly can't argue with the two above me because I like those polishes as well. I agree, get a few more pads.
Here's what th0001 said about PO85RD in a previous post:
"At the End User Level: Most enthusiasts and detailer prefer 85rd over 106ff for finishing on a rotary polisher. At this level 106ff has show some ability to ?fill? defects on particular paints, which is obviously not a problem when it is used at the OEM level as it was designed. Many enthusiasts believe they get a finer, sharper finish with this polish, with more gloss, then any other polish available.
My experience: 85rd is one of the finest polishes I have used, and seems to work well on 95% of the paint?s I have used it on. I find that is one of the only polishes I can use to finish out ultra soft paint perfect on a rotary."
I think you'll find you won't regret buying it. Don't get too hung up on the others. You'll like the one you bought. My .02