Which arm best for SME30-2?

If you're going to use only one cartridge, the Koetsu Blue Onyx, ask yourself which arm will match best with that cartridge. If you're going to use multiple cartridges, including perhaps a mono cartridge, the Phantom is unsurpassed which quick easy cartridge swapping (each with its own arm wand). The SME V is a gimbaled arm, the Phantom is a unipivot - each has its own attributes. The SME table and arm have great 'synergy'. A personal preference in the end.
I have both a Phantom and an SME V, each with its own SME made armboard - I use both on my 30/2. As Pcosta stated, switching arm/armboard on the 30/2 is quick, easy, and precise. I like the Universe on the V; other cartridges with their wands on the Phantom.
Don't overlook the Basis Vector 4 arm - it can be ordered with an SME base. A beautiful arm as well.

With the Koetsu is the Phantom a safe way to go.
Or a 9" DaVinci (or when another Armboard is available, the 10" with SME/regular mount ...).

Thomas - I have no experience with the DaVinci arm but use a Koetsu Urusuhi on my Phantom. It works quite well, as most cartridges do with the Phantom.

Thanks for the response guys. It is early days yet so I am wtching the discussion with great interest.

Rgurney - "The SME table and arm have great 'synergy'. A personal preference in the end."

Thanks for this. I have often wondered because of all the diatribe about this or that arm being "better" than the SME V, and I've thought OK Maybee a Phantom is better than a V on a different turntable but what about when mounted on an SME 30? .
Once again thanks for the illumination.