Best SME arm for TD-124?

Salmonsc, I was about to post a comment similar to Stanwal's, it depends on your choice of cartridges. I believe that relationship is far more important than any arm/table matching.

Mass, rigidity, geometry, and materials in the arm all come to play when matching a cartridge. If you can first identify the character of sound you are looking for and then find a few cartridges that satisfy that sound, then you can select a compatible arm. So long as that arm is correctly positioned and securely mounted, it should work fine with your TD-124.

Thanks for the input folks. At least initially, I will be using a Shure V15 III - & have narrowed my choices to the SME 3009, either the Series II improved or the Series III.

I agree with all previous comments and add that a properly restored TD 124 can do justice to an SME V and SME IV. For grins, I put a Graham Phantom and Shure V on my TD 124. It sounds excellent, as does a SME IV and Benz LP on that same TD 124. A properly restored TD 124 is a must to get great results out of a nice arm / cartridge combo. If nostalgia matters, the 3009 II looks and sounds good too.

If your base can accommodate a 12" arm, the Schick 12" works very well on the Thorens.