Rushton, I observed SST to be incrementally better than Pro Gold...let's
say 5% better. To me, a 5% improvement in sonics as a result of contact
enhancer is not equivalent to a 5% improvement in sonics from a better
source, amplifier or speakers simply because the benefits of contact
enhancer are so small to begin with. In my view, the miniscule
improvement using SST does not warrant the additional expense. That
said, some audiophiles find a 5% improvement worthy of thousands of
additional dollars spent to achieve the increase in performance. Also,
the tendency for the SST to flake...and yes, I did apply just a very thin
layer using the supplied applicator...is something I find personally
worrisome, especially where tube sockets are concerned.