We can generalize about the sound of tubes, but you won't know for sure until you try them in your system.
The RCA Clear Tops are supposed to be good in the treble. If you want to spend some crazy money, search for Telefunken G 73-R, a very specially selected 12AU7. I've never heard them, probably never will.
I like Amperex 7316 but don't think they're airy, more of a midrange tube.
Call Brent Jessee and talk it over. He'll have something for you.
