As everyone knows, I have been using "fat boy" 6CA7 (Electro-Harmonix) since I set up the GG and I also used them in my Megatron for a while and I had no problems. In fact, I have several replacement quads.
I haven't used them in my BH but I agree with you Michael that I think these fat ass girls ? "sound" better than the EL34.
* From what I've read, the Electro Harmonix 6CA7s are true beam tetrode.
Except for the Middle, More and DSOTM, I also prefer post-water albums.
Moreover, I think that "David Gilmour" for being simpler is better album (more enjoyable) than Animals, The Wall or The Final Cut.