And I wouldn´t call the Bose X a leightweight
Neither would I. And not that cheap if you compare with those 3 models I mentioned. Bose X are an exceptional product but still "old school" and so are the David Clark X11.
I am curious to hear about those who are using this new generation ones: a collegue uses Clarity Aloft in pistons a/cs and they seem to work well. I am just looking for rela experience on the other two or similar types.
Happy chat in frequency!
DK