I just stumbled across reasonable looking prices for NOS EF86 tubes on eB. Search for EF86. You will get to see all variants: 6267, EF86, 6J32P, EF806s ... maybe even EF804 and EF804s which have a different pinout.
I am not terribly fond of Tesla and recent [newer than mid '70s] 6J32P. I noticed some '60s 6J32P that are dirt cheap and might be nice, but there are so many others currently available that it might not be too expensive to go with a fancy brand.