I feel like a lot of people are like this about class D. It CAN'T be as good as Class A because of dead time or switching, or whatever. Just like the guys that pop up in threads (usually amps) and say it can't sound good because it didn't measure as well as this other amp.
I have a little bit of everything: tube, SS, and class D. My class D is a Peachtree Nova 220SE. I like it a lot and over the last 18 months it has gotten more and more time in my main system. I do have some vintage McIntosh stuff too, their first SS stuff and it sounds great as well. After I recapped the 2505, it sounded amazing. If I listen critically, there are definitely differences, but it is hard to say what is "best."
I have enjoyed reading this thread, but I choose to trust my ears. I don't care about dead time or switching, or whatever else. I want it to sound good. If it sounds better because you have fixed those issues, then great! I do think Class D is the future and it will only continue to get better. But I am getting ready to build a single ended tube amp, so maybe I am crazy :)