Ok you guys got me excited, so I dropped a pair off at the stringer's today. TB 17 mains with N.Vy 16 crosses (natural) @52 all around. They had N.Vy 17 only in white which would totally clash lol.
Going back to technique- there's a new blog entry at the tennisspeed site comparing the Fed and Djokovic forehands, discussing the role of the shoulder, and straight vs bent elbows. Quite a read, and a real mouthful to digest.