I've owned the SA-102 for over two years, it has been mated to a ARC LS-26. IMO, it is one of the nices tube / SS combinations around.
The beauty of the SA-102 is that it is switchable with respect to its bias (A vs A/B) on the fly.
The mere fact that not that many come up on the "Gon" and when they do they don't last long, that should tell you something.