the technical vs the technical
both have been known to session for guitar players, playing polymetric songs, playing fast all over the drums.
in Mike's Z Clinic. He recommended Virgil to Steve when he wanted to leave the band.
My vote goes to Mangini. IMO, he's more musical. Plus, I like his tone better. He knows when to stop doing polyrhythms. I mean, lets face it. Polyrhythms are cool. If you pull one out, its hardly you can't express a fellow stick-in-arms. But the way Virgil uses them doesn't sound musical most of the times. Whereas Mike will use it at the right moment.
By the way, both are really good friends and exchange licks and tips.