I've only read the first page and already lost the will to live... The whole argument against transistors is decades old, more modern devices appear to answer these criticisms and Class B amps can now be made with SIMPLE circuits, inaudible distortion at ANY harmonic (well below -80db) and an ability to drive almost anything with no instability (low output impedance giving high damping factor), as they're so much more consistant. Indeed, the only amps that get criticised for crossover distortion and grainy, grey qualities tend to be CB and Olive Naims of old, their owners thinking they're new and bang up-to-date in the components and circuit used.
I'm not saying I'm anti-valve, far from it, but to get as transparent as possible sound from valves does involve considerable expense in terms of output transformers etc and sad to say, the Output-Transformer-Less Croft amp I had used to blow fuses if asked to deliver more than a small amount of current - it sounded great though - when it worked..........
Some audio people are SO narrow minded. Embrace it ALL I say, and have some fun doing it!
Tear down these walls; Cut the ties that held me
Crying out at the top of my voice; Tell me now if you can hear me