Dear @keegiam : Your V is a good match for the ARts, maybe you can ask SME if the tonearm internal wiring of your sample is similar to today Vs and if not then some one coukld re-wire for you with top internal wires.
In the other side and if I was you my choice will be the ART9 XA over the old one for two things:
first the new ART 9 models are not an ART 9 with different cantilever or whatever you can think because Audio Technica as any other cartridge manufacturers and specially in its top models they make a lot of internal changes with out showed in its ads or specs is exactly what companies as Lyra does when after 2-3 years yo need are-tip of your Etna cartridge where Lyra does not return your Etna only re-tipped but the cartridge come back to you with all the internal up-dates Lyra made it through those 3 years even that does not says it.
Second the XA is a different design than the X1 because the XA has a non-magnetic core and comes with lower output level that always means per sé a true better quality performance levels and different stylus shape.
It's not free/random that the XA is what @hondo prefers.
So there are facts true reasons for what will be my choice: XA.
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.