I recently sold my 4210 channel switching 800. With a set of GT-M EL34's and a well broken in Vintage 30 it sounded great. Big,deep,nice saturated tone that worked great for heavy ZZ Top and old Priest.\ I'm thinking about picking up another 800 and have never played through a non channel switcher. I have heard lots of people say the single channels are better. I thought my channel switcher was fantastic. Best hard rock tone I have ever had. How are these amps different tonally?.