A lot of good suggestions mentioned (the ProAc and Vanderstein are two of the best). I wanted to toss in my vote for Legacy Studio HD stand mount/bookshelf.
I had an older pair of Epos ES12 speakers forever (still have, still love!!!) that I replaced last year with Legacy, and it has been mind blowing how good these are.
Very efficient (91db), super solid build, nothing is 'off the shelf', hand made in the USA, and STUNNING.
https://legacyaudio.com/products/view/studio-hd