Tubes for Cary V12 amps.

I have a few Cary V12 amps. When I bought them they came from the factory with Ruby EL 34's.  I have tried Winged C's, Electro Harmonix and JJ EL-34's and I have lot liked them as much as the Ruby's. I did ask Cary about the Ruby tubes. They said they designed the amp using those tubes and that is probably why the amp sounded best with those tubes.  So I have stuck with the Ruby's since (Ruby EL-34 BHT). But when I went to reorder the 36 tubes I need for the three amps I was told that the factory that produces the Ruby tubes in China had a fire and isn't currently making tubes and there are very few out there to be found. Also no word on when production will resume.

Anyone out there have any luck with tubes other than those I mentioned (Winged C's, Electro Harmonix and JJ) ?