1.800 repetitions lead to automatism.
After a while there is the experience to know blind where which voicing is. My opinion.
Of course there is nobody outside with your amount of 513 knowledge,
@Dancing Frog.
I've got the luck or bad luck of late birth getting into touch with 513. First time noticing that model in summer of 2011.
BRW or RW necks in general aren't my personal must have items, such as the scalloped nut or the 513 birds.
PCB has it's beneficiaries likewise hum cancelling, because point to point cables are like antennas and require a lot more effort on shielding. I remember PRS did once advertising for PS 513, in which transparent tones by hand-wiring have been described.
513 - yes the RW models - has been rewarded two times and subsequently as the electric guitar of the year by an international jury. Using that for gaining sales never took place. This would have been not my marketing approach to be calm with such a reward. But the 513 remained special interest.
To me personally - based on your words - a 509 won't deliver other voicings than my 513. SC and Clear Humbucking. Of course switching between the different modes at treble or bass differ a 509 from a 513.
But it is haptically an advantage switching a blade switch and two mini switches lying not in the same direction that two blade switches nearby?
The CE example is nice, but the reissue has only the name. Other top carve, Asian SE/S2 hardware, SE/S2 Bird material. The origin CE was fully Core USA.
The 509 comes not with the routing of Treble and Bass together. Does the middle SC gives such a sound? Therefore PRS quit that option?