You can get more power for less, in most places. the NAD is nice, but you can get the same Purifi module for far less (I have the C298, which I bought used). Or order the Purifi from Alan March-I have no changes to get my hands on Purify amp in my country. So I guess I would blindly buy M23. At least I will be future-proofed in amp section.
P262 Stereo Power Amplifier - March Audio
The P262 is a Purifi based stereo power amplifier. This simply elegant product is milled from solid aluminium with a tough anodized treatment. Exceptional fit, finish and build quality. Class leading technical and subjective audio performance.
marchaudio.com