The more that I think about it, and given a great deal of input from audio aficianados here, and elsewhere, my speakers would almost certainly be driven better by 60wpc than 30. Which means the M60 MKII.3 are clearly my best option. And, having given this a tremendous amount of thought, that is what I want, heat be damned.
The issue now, is that I've seen these on Audiogon no more than a couple times in the past few years. They were only made from October 2003, until December 2005. And I really just don't like the look of the newer, wide chassis.
Sadly, this makes it almost certain that I will have to make a secondary choice of amplifiers to purchase. And I really, really, want an Atma-sphere. Based on that, I can hold out for, say, six months, but after that, well, I will have to make a hard choice and actually buy something.