After being a die hard SET guy for decades, I wound up with my second pair of Quad 57s. Before SETs, I joyfully lived with my first pair of 57s for about 10 years.
Always missing them, I found a great pair of ESS 57s. But 8 watts of 300Bs didn’t push them. I made the big transition from SETs to SS. I tried many amps a wound up with my destination amp-Dartzeel CTH 8550 integrated. Never thought I would spend $43K on a component, or live with a SS amp, but it was the best purchase ever. My system built up now based on the Dart is the end point off the merry-go-round system. It is the central, gem of my retirement.