Has anyone switched from Class AB/A to Class D? Was it better? Was it worse?

I heard a class D amp the other day (Lyngdorf) and it sounded really good. I liked the minimalism of it also. But, I need to own a amp for a couple of months to really know if I like it or not. I don't like room correction ether, so I just liked the sound without that. 

Curious, has anyone ever switched from a class AB or class A amp to a class D amp? If so, did you regret it? Was it a downgrade in sound? Or was it upgrade in sound?