300B tubes for AN Kegon Set amps?

I have experience with both the Sophia RP and Takatsuki. Both are good, but the Takatsuki is superior - by a lot. (Honestly, not even close. The only advantage of the Sophias is cost.) I have had no reliability issues with the Takatsukis. I have a pair of barely-used EATs, but neither own nor have heard the Elrogs.

Anyone have any info on the EML Mesh 300B tubes? I currently own the Psvane black bottle tubes and they are powerful sounding but I wonder if the EML Mesh will sound more liquid in the highs? My amp is a Triode Audio SET 300B.

Thanks for the help. I ordered the Takayski's.