Yes !!
For what they are, and where their at, and what I expect of them for their SQ capability in the 7 room`s systems of my house.
For my main critical listening living room`s system, with it`s last major $$$ upgrade & update over 10 yrs ago, I`m totally happy & satisfied, and can only think of one "possible" upgrade, which would be considered, but only if the price was almost a give away, would be to acquire another Mc. MC 275LE to swap out the currently & perfectly operational and seemingly capable, that was electronically restored by me, MC 60(sans it`s 2 rectifier tubes), that drives the XRT 30`s matching center channel speaker duty, in my tri-amplified Mc XRT 30 speaker system, for the extra dynamic head room that the mono configured MC 275LE would provide when the system is played at realist SPL`s , + it would be a better power match to the existing (4) mono configured MC 275LE`s that are currently driving the XRT 30`s tweeter`s & mid frequencies s drivers in the XRT 30`s line arrays.
Though I`ve never heard the MC 60 protest during the past ~6 yrs. use, when playing the multichannel/surround sound selectable audio option, multichannel SACD`s, Pure Audio BluRay discs, or music concerts, and of course BluRay, DVD movies.
I`m just not going to look for a MC 275LE, even though I can easily afford to track down & buy a BNIB if I wished, if I found one that was available.
But if one was very, very attractively priced and offered to me, I might consider.
Ciao