nice system(s)!
I did the upgrade from NordOst SS to Valhalla a long time ago so but if you want to step up another level, my move from Valhalla to High Fidelity Cable CT1-E was at least as good an upgrade. I have now CT1-U which is IME still worth the upgrade.
Which other coupling device did you try before settling on the Cera Pucs?
Charles