Best 300B tube

Hi! I have an Audion Silver Night MKII with Tannoy Turnberry SE and a Chord 2Qute connected to a Macbook Pro with Audirvana 3.5. The Audion mounts JJ 300B tubes. I replaced with TJ Full Music Solid Plate matched pair. The middle and highs expanded, all very clear, but the sound now it's so bright that a in less than an hour a get auditive fatigue. So I got back to the JJs, thinking what's next. Gold Lion or it would be similar? Raise money for KR Audio or stop curiosity and just conform with JJs, that are not bad of course? Thanks a lot.