Not true, they are not making the music sound better, Neumanns on the other hand are more forgiving and too soft sounding for me. I worked on KH310 and KH120 for years, switched to Genelecs and would never go back. Mixes I did on Neumanns sometimes were surprisingly harsh when I checked them in my car as they hid the problems, no longer an issue with Genelecs. For recreational listening I would go with Neumanns as they are cheaper, for critical work no contest really and I went with The Ones.
BTW you never shared any measurements from your listening position in your room, you always claim you prefer flat frequency response, yet I'm not sure you have that in your room with the placement you use and reflective surfaces near monitors, especially with non-dsp models