Only reason I would own a complex, multi-channel amp like the Mark series is to run two 6L6 in class A TRIODE mode. and for that, I would prefer a simulclass mark III - the IIc+s are ridiculously expensive.
those amps with all those bells and whistles? Needlessly complex and expensive.
I own two Express 50s, one older with Mercury output trafo, one newer + model. Both excellent amps, very versatile. They sound SUPER in triode mode.
I own a Maverick with a rectifier tube, running EL-84s, and a Studio .22.
These are all the amps I will ever need until I become bigger than the Beatles, at which point I MAY need a stadium rig someday - something like Santana's mesa.
You don't need huge amounts of power, you need TONE - the PA system can do the rest.