Best bookshelf speakers

This thread is fun, but also nuts. The best advice I can give is go look up local dealers, check out what brands they carry, then make a shortlist and have as many auditions as possible, ideally with your own gear. Speakers are completely subjective things and one person’s audio nirvana will sound utterly crud to the next person.  Remember also that the actual space footprint of a mini bookshelf on stands may be no smaller whatsoever to a slim floorstander.

"Tiny companies" that buy drivers from OEM driver manufactures such as Seas and Scanspeak, which are held by larger companies, seam to do just fine in R&D. Not sure if you call Devore 'tiny' but they buy some of their drivers from Seas and their speakers seem to be highly thought of.  Zu uses /Eminence drivers and they are a major player in making drivers and seem to be well thought of by musicians who use their drivers in guitar amps and other A/V implementations.

Just like other industries, many speaker companies are subsidiaries of other A/V companies with most manufacturing in China.

Heck, B&W was bought by a automation company (EVA Automation), former 49er owner I believe.  Not sure what their plan is, but they have no experience in speaker manufacturing.  I presume they want to use the B&W name and integrate something with streaming and home automation.  Is their R&D going to driver development, or something mainstream that brings in revenue along with some automation plan.

I think implementation and integration of the speaker is more critical than a 'in-house' driver technology. 

My issue with small companies is resale and a legacy plan if by chance the owner becomes ill, or retires.  I am aware Madisound has driver matching, but I am still concerned the replacement driver may not have the exact same measurements of the original.

I agree with moto, let your ears be the deciding factor based on your buying criteria.  

  

I am watching this thread with great interest, because I have a very similar question to pose. My beloved NS1000m Yamahas are overpowering my 'cave in the loft' (albeit fully soundproofed) - proven by the fact I plugged in some Beovox s45's and the acoustic measurements are vastly superior. I was very curious about the writer who dismissed the 3a DeCapo because I have heard them and astonished with how natural they sounded.
Anyway my list have thus far comprised:
Kef R3
Reference 3a Dulcet Be
Acoustic Energy Reference
ProAc Tablette Signature

I really want a high end sound from a 5-6 inch driver speaker.

@motokokusanagi1
This thread is fun, but also nuts. The best advice I can give is go look up local dealers, check out what brands they carry, then make a shortlist and have as many auditions as possible, ideally with your own gear. Speakers are completely subjective things and one person’s audio nirvana will sound utterly crud to the next person. Remember also that the actual space footprint of a mini bookshelf on stands may be no smaller whatsoever to a slim floorstander

I’m building a system from scratch. Of course in a perfect world you’d be able to go to the few dealers near you and try all the speakers on your radar, including the direct sale models, with all the amps on your radar and all the DACs. That’s obviously not possible. Instead you have a very limited selection of gear in your vicinity that is not representative of the best gear at your price point in the world.

The problem and beauty of this hobby, I'm learning, is that there's so much good gear coming from so many different tiny manufacturers. If you're buying a laptop or a car, you more or less know the universe of manufacturers and can pick from among their models. I'm over a month into my research on this and am still discovering gear that I think I should be looking into. 

A small floorstander might do the trick too, but so far none have piqued my interest. Any suggestions?

Not sure what your listening space is, but mine has always allowed a 7ft equilateral triangle and sometimes 9ft in my living room.... 
Latest arrival in my 7ft triangle is an old pair of totem hawks,  and this is the best compromise i have ever had, between small size, deep bass, easy placement, relatively easy to drive, dynamics, sweet spot, and  fantastic stage and imaging.  They have been around for about 20 years and they are not cheap.  But i think that they do what an audiophile wants in a small package.
Maybe the totem sky measure up and  more at a lower price point.  There's always the used market.