Which 211 tubes for my Wyetech Topaz

I had heard that the RCA was superior in may ways but may not even be available at any price. Sounds like the GE is the OS tube to look for. I haven't heard much about current production, glad to see someone was familiar with them.

How about the Elroy tube. Also are the r a that much better than the GE tubes. Thks

I've used the GE and Shuguang tubes in my Topaz.

Shuguang are good value for the money the GEs are richer sounding to me. I have not had the opportunity to listen to RCAs as I have never found a good pair at a decent price.

Elrog's sound interesting but too many comments on reliability....who makes them available in North America?

Thanks