What's your favorite boutique speaker maker

I, too, wondered about what defines "boutique".
Janszen qualifies if we're referring to factors such as small production numbers, products built-to-order, distinctive design features, and direct involvement of the owner/CEO in the production and sales processes. Oh, and relatively high prices. $5K (or so) and up?

Janszen offers 30-day trials and only sells direct.  I don't think Devore offers in-home trials (or maybe it depends on the dealer).

@ostinatospeakers
My purchasing history spans Bose, Totem, and Janszen speakers. Clearly, Bose is mass market. I don't consider Totem "boutique", even though you'll never see a Totem Acoustics shoppe next to Bose in your local factory outlet mall. 

To buy Janszen loudspeakers, there is no dealer network. You call owner/CEO David Janszen. With the Valentina model, you choose active vs. passive, ash/cherry/walnut/maple/painted baffles, standard or custom painted finish for the surrounds, carpet spikes/rubber/other feet, Cardas (4-way, no bananas) vs. 5-way binding posts, dual/bi-wire bindings. When I mentioned my concern about cats using the front panel as a scratching post. David suggested maybe they could come up with a cat-resistant grill material.  You can pay by credit card or else get a discount for direct-wire to the company account. 

Then, you wait. For me the build process took almost a month. They've sold about 40 pairs of the model I ordered in the year or so since they came out. AFAIK their hybrid electrostatic speaker design is almost unique. It derives from a patent by Arthur Janszen (David's father) in the mid-1950s. Both the bass and the tweeters are tunable using controls on the backs of the speaker cabinets. After setup, I sent David a copy of my room-frequency response graphs (which already were about as close to flat from 20-15000 Hz as I've seen). He said they looked good, but suggested I should move the speakers closer to the front wall.

This is what I consider "boutique". Will the product necessarily sound better than an off-the-rack alternative? No (although every review I've read has raved about it ). 

I love the look of Devore Orangutans. Although they've been growing their dealer network, apparently they still offer a staggering variety of beautiful cabinet finishes. So a customer can specify, say,  glossy robin's egg blue for the cabinet sides, with fronts in Sweet Gum or Tiger Maple that appear to be book-matched veneers. So the "boutique" choices may have at least as much to do with building a piece of fine furniture as they do with SQ or usability.  But also, if I want to discuss specific issues affecting SQ (such as my low ceilings) then I may want to seek a boutique builder who'll allow custom choices for features such as plinth design, rake adjustment, tweeter positioning, etc.