Hi Aquapiranha
Sorry but it is a myth that valve amps can't measure well. It is true that some don't as also some Soild State also do not. Martin Collums is not the only one out there saying hold up a minute, lets have a look at this. However if you like Class D in your system thats great, just as many like valve amp sound or even traditional Solid state sound. There is a growing feeling that Class D despite the advantages given, may just be very poor in its implementation.
Purely on sound I would not be quite as black and white as Dave Cawley has been, but so far, bar the Chapter audio Kit I really have to say I don't like Class D(in the context of my System and elsewhere), however I will keep an open mind about it. When I hear it sound fully good, through out the frequencies. At present something is wrong IMHO, and we are not yet hearing the best from this concept. Time will tell.
Regards D S D L---- Neil