What's your favorite boutique speaker maker

I’m a little confused over what actually categorizes boutique branding and price will play a big factor in the level of engineering that goes into the design of a good speaker system. The type of music genre you are trying to accommodate as well as room size and acoustics can totally make or break any sound system. As for my system, I am a tried and true Harbeth fan. Sold exclusively in impedance matched pairs the midrange drivers are unparalleled. I would suggest you research a set of SHL5+ or if you have the room, Harbeth 40.2 reference monitors. They will set you back a pretty penny but man I learned long ago that the biggest investment in any sound system should be the speakers.
https://harbeth.co.uk/index.php

Chapman Audio in Washington state: https://chapmanaudiosystems.com/

Interesting. I get an early Vandersteen vibe from that lineup. Would like to hear them.

Yes, the look is certainly early Vandersteen, but the sound is wonderful. 

I too!!!... would second the vote (of  nonoise) for Tony Minasian’s G6 stand mount speakers. They are my favorite (best kept secret) for musical bliss! Transparency, fast, neutral, sensitive, and what I might call, emotional musicality.  Since my purchase, it’s become very difficult to pull myself away from the sweet spot, quite addictive!