Well, first things first... while VSR does stand for variable sidecut radius, and modern PGS boards certainly do have those, the first person I noticed use that acronym was Bruce Varsava, of Coiler snowboards. He uses it to describe his 3-radius boards, which are freecarve oriented and have that good old snappy, hooky tail response you're talking about. The radii are generally shorter in the nose and tail and longer in the middle.
Modern PGS (parallel giant slalom) boards have strictly increasing radii - shorter in the nose, longer in the tail. Coiler calls these shapes NSR for new school race. Prior calls them FLC for fall-line carve. It sounds like this is not what you are looking for. So for Priors I'd say you'd probably like the WCRM better, but ideally you would demo both somehow, like at an expression session.