That's the tube. I was listening to them last week and happened to search the auction site. I bought two more pairs for $37.99 each and they arrived yesterday. The seller had 3 pairs and they went pretty quickly.
http://www.ebay.com/itm/182425252299...%3AMEBIDX%3AIT
After 18 months with the Inspire gear I've found a few power tubes
I really like. However, like you none that I have tried are awful. All of our systems and sonic preferences are different. I don't think there is a silver bullet power tube.
Chinese NOS that is almost hard to believe.
Like Peter, I find that the new production power tube are really excellent and you can experiment w/o breaking the bank.