Tom,
Those arms are really something. Frank has taken each engineering need and reduced it to its simplist solution. The craftsmanship, tolerances and attention to detail is second to none. These are lasting designs. The Tri-planar is no slouch though and "could" be a better match for some systems. Also, I suspect that cartridges that we didn't get to audition might pair up particularly well with one arm or another.
Several things struck me as particularly surprising. The biggest surprise being the difference between the 340 and the 360 Teres. I just didn't expect it to be that much. The term "huge" is often used to excess in these forums and I will refrain from using it here. Significant would be a better choice to describe the gains. Well worth the difference in cost. Even the wooden case drive motor improved the performance a fair amount. Knock me over with a feather.
At $10,000 the Lyra Olympos, single layer coil version cartridge was bettered by the Universe to these ears. What we listened to was the copper version of the Universe. Steve has the silver version and the conventional wisdom is that the copper is better for large orchestral and the silver is best for jazz, blues and rock. It's a shame we didn't bring Steve's for an overall shootout between these two.
The Schroeder No. 2 @ $2200 with a carbon fiber arm wand just has to be a best buy. It is worthy of hanging an Olympos or Universe on it. I watched closely the setup of these arms. Of course, those doing the adjustments were seasoned professionals but I didn't see anything that was difficult nor time consuming. Of particular note is that the Schroeder arms are proven a good match with suspended tables. In a previous session the Shelter 901 was a particularly good match with the Schroeder arms but since I wasn't in attendance at that event I will let Doug address just how good the match was.
If, like me, you consider the human ear to be the most accurate of measuring devices this was a very scientific testing procedure. I'll never forget it.