So I have reassembled my Magnums lites and have recabled them with Vampire PCOCC. Because of the recable and the fact that Rhydon took so long with the new drivers, I can't make any comparison with the v1 drivers except that one thing I noticed was that the v1 drivers sounded a lot better with flats but my preliminary impression is that the v2 drivers sound a lot better with Bowls.
Overall, I'm still very impressed with the Magnums but will need more listening time to form a more definite opinion. For the $300-400 required for the Magnum lite, these are a superb deal. It's a shame that I can't recommend anyone order one because of the inevitable delay.