OK, I'll bite too but apologize in advance to anyone I may offend. I use an Aragon 4004MkII amp for 2 channel and front mains for HT. While I am very satisfied with it's performance, I wouldn't classify it as high-end. It's definitely atleast one more rung up the ladder toward high-end than my previous Adcom 555 amp.
I would compare the Aragon to a AAA baseball player trying to make the big leagues; he hits for average, with good power,has good speed and a good glove, but plays right field and has an arm like a wet noodle. Good enough for some line-ups but not an allstar. I think this amp might improve it's chances of making the 'show' if it was pure class A, rather than class AB, but it would probably then be piced much higher, too. New I think it was only $1,800 and I bought it used for half that. I think in amps, much like this forum, you get what you pay for. When I think of high-end ss amps, I think of brands like Pass, Levinson, McCormack, CJ and McIntosh. For tube amps, I think of Atmosphere,CJ, McIntosh, VTL and VAS. I probably missed a few brands but would love to try all of these in my system. In the end, though, I think you should only use your own ears in determining what's truly 'high-end' for yourself and ignore any thoughts of status. Happy hunting.