P085RD is still out there. 106FF(nano) is just P085RD with a wee bit more abrasives added and a bit more lube so you can work it longer since it's designed to cut more/longer than P085RD.
It's getting harder to obtain true P085RD. SOme sites do have it but you have to pay $$. Or go across the pond to England to obtain it.
As for selection, SIP, or Powergloss, IP and any of the fine finish polishes will do you well. You now have to match up pads to product and machine.
I normally use nothing else than
Menzerna and have gallons of 106FF. Nice to have full gallon containers of this.
Regards,
Deanski
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DR SHINE
Member: PCWA
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'06 997 Carrera S PCCB, PSE Chrono,

Pending FarnbacherLoles Modifications