You'll have to wait one more week, Bandit. The weather was sketchy and there was no way I was going to chance a single rain drop on my TC-50. Even though next week's gig is indoors, I will leave the 6CA7s in place. Keep in mind I will only be using the clean channel, too.
I've used EH 6CA7s with a great deal of success for years in my Carvin Vai Legacy, another EL34 designed amp. To my ears, it was like those tubes were made for that amp. I thought about trying the JJs, but I read too many reviews that made me change my mind. Your story of a tube failure is not uncommon with the JJs, unless they've improved them lately. The EHs are solid, and I can attest to that. Even though they don't have the JAN moniker, they are of military reliability. I did have 2 fail on me once, and that was because I ran the amp on 50 watt mode for too many months, which was essentially turning 2 tubes off. When I switched back to 100 watt mode, smoke. That's also why I ALWAYS use my Dyne in 90-watt mode.
I also tried the EHs in my Dyne for a test run and liked them quite well in that amp, too. But I preferred the Tung-Sol EL34Bs more. Both the Dyne and the Legacy are darker amps, but I think the Dyne is darker than the Legacy.
Some day soon, I still need to run my TC and Dyne in stereo together and see if I can still walk afterward.