Graham Engineering Phantom III 9

I am using a GE Phantom II Supreme tonearm. This tonearm wand had improved internal wiring, or that was my understanding. Is the new Graham Engineering Phantom III 9" Titanium Tonearm Armwand a useful upgrade.

While I am not prepared to swap-out the entire tonearm for the newer model at this time, I am curious how much and what kind of a difference it might offer.

I appreciate the informed insight that others may offer.