Sanders is a kool guy and his show systems always sound good to my ears and for real world $. I admit that I am a closet panel fan and chose Dale Pitcher's speakers due to their panel-like attributes in a box.
Keep me posted on the tube rolling. It takes time and you get fooled or disoriented if you evaluate too quickly as I have done. I currently have some KenRad smoked glass 6A3s in with the NU 5U4G and it is sounding good after a few days of burn in. Still want to hear the Carbons with possibly a Mullard rectifier, but I am reluctant to spend gobs of $ on tubes right row. The wife will go Jerry Springer on me....