Many people like tube sound due to its euphonic characteristics... but there's no substitute for raw power.
I own a PrimaLuna Dialogue 3 tube preamp which until a month ago was paired up to a Pass Labs X250.5 SS amplifier. The combination was incredible. I still have to listen to anything as good as this system.
But unfortunalety I had to sell my Pass amp and replaced it with a beautiful PrimaLuna Dialogue 5 tube amplifier.
The combo is incredible... up to a point I cranck up the volume. I like the sound of course, but it is pretty evident tube amps do not have the guts to properly handle deep bass sounds in certain music passages.
Tube amps have improved a lot. Most current amps are more accurate and the sound is not as coloured as it happened with old tube desigsn. But when you need power to obtain deep, controllend bass sounds, tube amps are no match for SS amps.