As I understand it, there are some workflow differences between the SE series guitars and the core line guitars. But PRS doesn't use a Plek machine on any of their model lines the way Gibson or Heritage would in the building of a Les Paul style guitar. To explain this in my own way of saying it, PRS builds the neck first and then attaches it to the guitar where Gibson or Heritage would build the guitar first (with neck attached) and then install the frets. PRS uses a method to level the frets before the neck is attached to the guitar body which is really fantastic. But on a Les Paul guitar (or any guitar which is already built), the only cost & time effective way to level the frets is to use a PLEK machine.
In my experience of having many guitars connected to a PLEK PRO machine to undergo a laser scan to determine if a Plek job is needed or not, I had the following results:
* Brand new PRS core model guitars: NO The fret work from the factory was outstanding and there would have been no benefit gained from a Plek job.
* Used PRS guitars with a lot of fret wear: YES A Plek job was essential
* Gibson or Heritage Les Paul style guitars: YES They MUST be Plek'd at the time of manufacture in order to get a perfect fret dressing in a time & cost effective manner. If one of these didn't get a Plek job at the factory, it needs one.
I think this would be a good time to take a swing at that one PRS dealer out there that that Pleks every brand new PRS guitar they get and then flaunts that fact in every one of their online ads. Not only do I think that practice is stupid, it offends me as I know how good of a job the people on Kent island do at dressing the frets before they send out a brand new PRS guitar into the world. Guess which dealer I would never buy a brand new PRS guitar from for that very reason.