Re: question about P-rails
They are RWRP, the bridge P90 cancels with the neck P90, the bridge Rail cancels with the neck Rail, and whether you're running series or parallel, there is hum-cancelling. I've said in the past that 90% of hum cancelling is simply having the second RWRP coil. Then if you want to fine tune it, you would have dead equal coils, like any traditional Humbucker. So the P-Rails in humbucking mode (series or parallel) is very quiet, albeit not as quiet as a dead matched Humbucker or a Classic Stack Plus, where the noise in the bottom coil has been individually tuned to the top coil. (yes we do that for each one!)
The P90 or Rails by itself is generally quieter than a Strat or P90 counterpart, partly because of the second coil acting as a noise shield when it's out of the circuit. The Blade in the Rail coil is gounded, so that helps too.
All of our Beta testers said that the single coil settings were either equal to or quieter than their vintage counterparts. Hope that clears some things up.