Tube comparisons are largely system-depndent, and component dependent. One brand may sound great in one amp/system, while inferior in another. Also your own preferences and expectations will be different from others. Some may like a pronounced midrange while another may prefer overall balance, as an example. The best thing to do is use your own ears to judge. Easy to do in the Dynaco with EL34's as they are not that expensive if you are limiting your choices to current production. My buddy likes EH in his modified st70. Years ago Listener magazine declared JJ vintage early 90's to be the best of recent production. I used those in my Mini-mites and they were wonderful there. Those came in the blue and yellow boxes. Not sure what that input may be worth, but there's .02 pennies more for your collection....
Marco
Marco