Well, thats the thing, Peaveys may not be the finest, but they're easily in most people's financial grasp, thats the way Peavey has always rolled.
But the Thermion head is something like $1200 US, which is about the same as a Peavey JSX head, only the JSX is alot better sounding. ( I used to own one, but I sold it. No response to dynamics, but in the opposite way: The Thermion doesn't want to ring out the note when you hit it, and the JSX/XXX is extremely compressed and its hard to work a detailed softer sound out of it.) But. . .at least you can get plenty of usable tones easily out of the JSX. I don't know if you could milk one out of the Thermion, honestly.
Were you talking about the Valveking? It looks kinda cool, but it is extremely cheap, which some people may go "YAY!" for but that most likely means cheap parts and cheap labor. Pure speculation though, I won't comment anymore on the Valveking until I've tried it in person.