Wish to thank all the folks on this forum who have assisted me in my long search for a new amp to pair with my CS 2.4s. Special shout outs to jafant, jimob, tomthiel and yyzsantabarbara.
After much deliberation, made my choice for a new amp, and put in an order for a new Coda CSiB V1 integrated amp (150 watts into 8 ohms, 300 into 4, with first 18 watts in class A). This will be replacing my venerable Bryston 3BST and BP20 combo. Something of a guilty pleasure (but one in which I have my wife's blessing) and easily the most expensive purchase made in the many decades I've been involved in this wonderful hobby.
Now comes the hard part ... waiting for delivery, which due to part shortages/supply chain issues most likely won't be before the middle of December and could be longer.