Got the North Creek Zens this afternoon- very quick service- and immediately installed a 10uF Zen in place of the mylar 10uF stock. I had forgot that one was a basic mylar. I've already got the fix I was looking for- everything else will be gravy from here on out..... Sounds very good, even only a few discs break-in time. Much more open mids, cleaner, sound, and the "congestion" that I heard on some classical music is gone. I'll give this some time, and move on to the others and experiment a little with them too.