Thanks for all the links. I'm interested in small (classical) location monitors too.
I couldn't find any Grover Notting measurements besides the single-number specs. The Neumann KH 120 specs/measurements look impressive as well, although I don't feel qualified to predict performance based on specs only.
IME max SPL can be an issue when musicians ask for identical loudness between performance in the hall and playback in the green room.
<10 kg weight per speaker is very tempting

BTW, the Neumann website "Worldwide Distributors" links European customers to the Sennheiser website, but there I can't find any Neumann info.
Where can European customers try/buy Neumann-kh equipment ?