markusthenaimnut---very good comments!!!!
For anyone who has the time, click on the link below. A classic 300B Shootout. IMO, they are all very good tubes.
300B Advice
I have a Sun Audio 300B and I'm super happy with the sound with JJ 300Bs. Am I missing something though? What happens when I move to an EML or KR or a WE Reissue? Are the JJs on a particular side of the audio spectrum, I assume particularly dynamic.... and if I go for something more textured, will I lose that dynamism. Or do the luxury 300Bs give you both?