I'm a big fan of pentode gain stages. Some of my favorite amps(Futterman H3AA, WE91 Clone, power amp section of Dyna SCA35) uses the much maligned pentode. It may not be as accurate as a triode, but there is something in the mid-range and "jump" factor in the music. I was once chastised on technical merit on liking a pentode gain satge... but then again that what they said about SETs.

Thanks for sharing your experiencde on "road less taken".

Quinnling