What's wrong with trying Mullard EL34 XF2? I think they are better performing than those you have listed. Second choice would include many other Mullard series and the AEG Telefunken EL34. If you want new and inexpensive, the Wing C EL34 is probably the best of the new lot.
As for input, if you're using Russian 6SN7 then yes, NOS is better. For CJ I would use Tung Sol chrome top 6SN7 and for the 12AU7 position, perhaps the Amperex 7316 or CBS 5814.
As for input, if you're using Russian 6SN7 then yes, NOS is better. For CJ I would use Tung Sol chrome top 6SN7 and for the 12AU7 position, perhaps the Amperex 7316 or CBS 5814.