Some Sovteks: nicely dirty, but quick break-up...gets a little muddy.
Just bought some Ei's from my local guy & haven't had the time to try them yet (tomorrow!), but he had plenty of them for $10.00 ea. I almost bought some Sylvania or RCAs, but they were a little pricey; he suggested the Ei's saying they were basically the Yugoslavian knock off of the Sylvania or Phillips design....we'll see but I'm glad to hear you like them!
If you're looking, give him a yell: Ken Chait at www.tubeman.com