I was there for those arm comparisons too. I own a Teres but I don't sell tonearms, though I have owned a few. I hope that makes me objective enough. FWIW, my "ranking" from those sessions would be as follows:
SESSION I (using two Shelter 901's, Koetsu RSP & Urushi)
Schroeder Ref
(unbridgeably large gap)
Basis Vector I + Teres VTA adaptor
Graham 2.2
The Basis and Graham were close, but I gave the nod to the Basis for slightly superior dynamics. The design of the Vector certainly seemed more promising than the Graham's. It had a more stable bearing, a more stable headshell/cartridge interface and a continous run of wire. For the price, the Vector I + Teres adaptor was an easy winner vs. the Graham. Even if it only matched the Graham it was $800-900 cheaper, which would have bought a nice cartridge upgrade.
Neither one, however, belonged in the same room with the Reference. Its superiority was jaw-dropping, as befitted its price.
SESSION II (using two ZYX UNIverses & Lyra Olympos)
Schroeder Ref/TriPlanar VII (near tie, a matter of taste, system and budget)
Schroeder DPS
Schroeder Two
(very large gap)
Graham 2.2
IMO the big surprises from this session were:
1. How close the TriPlanar VII came to the Ref
2. How thoroughly the $2400 Model Two quashed the $3900 Graham (priced with cable).
Unfortunately, we did not listen to the Basis on this occasion, so placing it against the lower Schroeders requires speculation. The Schroeder Model Two costs even less than the Vector and "probably" outperforms it by a good margin. If I were in the market for a tonearm and had to choose from those above, I'd go for a Schroeder Model Two for $2400, a TriPlanar for $3900 or perhaps a Schroeder Ref for $5500, the latter two being very close.
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Notice: This article contains backward-looking statements. Past performance is no guarantee of future results. This article is not a solicitation to sell. Always demo in your own system. Listen carefully before investing or sending money. Consult a marriage advisor for possible domestic consequences. We are not licensed to offer marital advice. IMO, IME, YMMV, FWIW, IIRC.