It's the heat /power consumption issues which are putting me off. I've owned dozens of AB Amps, just thought now might be a good time to consider something different.I have had multiple class D amps, even one with the the eigentakt modules. I found them all very transparent, detailed but lacking warmth and body, not something I could listen to all day. Obviously the sound will depend on your speakers, jumping from A to D is quite a leap.
Just my take, I'm sure many are happy with the D, I prefer AB.