I did notice that the neck on the PRS wasn't as straight as the LP's so I tightened the truss rod a bit and now they're both nice and straight with no buzz. That helped the playability on the PRS. Also for the record the PRS has a trem and the LP doesn't of course, that seems to make a difference in tone. The LP just feels more "solid" when strummed than the PRS, it is heavier of course but I wonder if it's also due to the stop tail bridge.