Octal base driver for 300b

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I'm just finishing off a 300b build with EL33 as a driver tube. Mu is about 20 in triode. Since I now have the octal bases available I'm wondering what else I could use with a gain of at least 20 or preferably higher. Could be a a triode like 6J5 or 2C22 or a pentode/tetrode in triode. I'm not interested in a pentode stage - just triode connected.
Some obvious examples would be 6V6 or 6W6 or 6Y6 in triode, but there must be loads of others that could sound good. I'd prefer a low bias voltage to avoid a cathode bypass cap if possible, and this is where the EL33 is good. Russian 6P9 is similar. I may not find a better octal driver, but open to ideas.
Suggestions?

Edits: 08/25/20

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Topic - Octal base driver for 300b - andy evans 01:58:28 08/25/20 (8)

6AG7 ? - GeorgePope 10:50:28 08/26/20 (0)

RE: Octal base driver for 300b - sideliner 18:11:37 08/25/20 (5)

RE: Octal base driver for 300b - andy evans 00:32:54 08/26/20 (4)

RE: Octal base driver for 300b - PakProtector 19:22:26 08/28/20 (0)

RE: Octal base driver for 300b - sideliner 11:32:44 08/26/20 (2)

Very useful info. - andy evans 15:28:29 08/26/20 (1)

RE: Very useful info. - sideliner 17:42:51 08/26/20 (0)

RE: Octal base driver for 300b - PakProtector 04:48:54 08/25/20 (0)

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