Getting down to brass tacks.
The Lamp tube rolling possibilities is the icing on the cake and is almost the cake itself.
I like the 300B, the KR300b in particular as the bandwidth is more complete. I am hoping the Elrog 300B will blow this out of the water. Perhaps the Elrog is not really a 300B?
Some reputable Japanese Tube designer said Psvane 101D is not really the true one. He was of the opinion that the WE ST101D would be better, if you could not afford the Balloon.....
I will try the 2A3 or the 45 later
The rectifier is another nipple to tweak. My one is the one I have stated earlier. Leaves the other behind.
My 2c.