I have one p12 in the case now. Non-RGB version. I keep it around 1000rpm. No noise at all from that. I would without a doubt have bought the RGB versions of those if they looked any better. the RGB ones look like so cheap fans when the lights are on.What speeds are you planning to run them at?
For ARGB fans the Arctics are the best noise wise, but they suffer from humming at certain RPMs which I got around by tuning the fan curve. For some idea of fan noise, check out the eiglow_ YouTube channel.