It's probably not a lack of interest ,Eric.
I think you're better off posting in the Tech Talk section as that's probably the forum for this sort of question.

Ok, my limited experience..a tube amp power section seems to give a more rounded and musical output and a natural distortion (think fat ,wide sound)when it is played flat out and a tube preamp has a wicked effect on the sound (provided you have a decent amp). Think of any real guitar tone from the 50s up to and including Slash, all those various tones [usually] come from tube amps -although a lot are modified by fx pedals..

I spent all my money on guitars,but, will get either a small old amp or a Laney LC15 when I have enough money,having said that my Vox Cambridge is nice enough for now..