Not again?
Personally, I don't much care if it uses donkey's dung, so long as it makes good music possible.
I do prefer working with solid state because to me, it makes more sense than tubes, but I'll be the first to acknowledge that this is a very personal choice.
As for how each "group" sounds, well, I could make a solid state amp sound very much akin to a tube one, and I assure you, so could Dan and Hugh, to name just two of our guys here. Yes, solid state can be tweaked to sound like tubes so much so that if you didn't look at it, you would swear it was tubes you are listening to.
But you can't tweak tubes to sound like solid state, at least that I know of. So much for which is more versatile.
I think this is a most misguided discussion. In my view, it's not how the components used sound, but rather how they have been made to sound by their respective designers. There's no denying that BOTH camps are heavily stereotyped - you are told and taught to expect a certain kind of sound from each so much so that this has become the driving force.
Cheers,
DVV