Speaker manufacturers or box manufacturers with off the shelf drivers?

OP take a look at Buchardt or PS Audio speakers if you think there is no new.
Whatever you do ignore the know nothings around here. 
You know who they are.

Rule #1, never take anything kenjit says as legitimatize advise.

My speakers are Audio Note AN-J/lx's, Audio Note makes their own drivers and is obsessive about matching drivers in a stereo pair. From their website:

Consistent performance is a major issue in loudspeaker design and unfortunately all drive units vary slight from each other, even if they look the same and have the same basic specification. Many loudspeaker manufacturer’s will tell you that they provide “computer matched” crossovers, and whilst this may be true in one sense (each crossover may have been matched to have the exact same capacitance, inductance and resistance) this essentially “passive” method does not adequately take into consideration the mechanical and acoustic variance present in the drive units themselves, where minute differences in acoustic behaviour will result in quite substantial differences in performance and sound. Therefore, to obtain the best possible combination of drivers and crossovers, we have developed a dynamic matching process. This ensures that each loudspeaker in a stereo pair matches a ‘master curve’ and also its partner, to within 0.4dB; to the best of our knowledge, no other loudspeaker manufacturer achieves such close matching and tests 100% of its production.


Also kenjit is an expert on trolling but not speakers. :D

The design is as important as it's execution. And too many do not ever address even the easy details. Let alone the hard one's.

I Think it comes down to being a smart consumer an educated audio enthusiast and training your ear/brain. Speaker design is an art and a science and its up to you to decide if a speaker represents a good value for your budget and tastes.

Also don’t forget that driver designers are experts at what they do and make them often at an economy of scale that would be much more if they were bespoke for each speaker company.

To use a car analogy, a lotus Elise
I once rented had a Toyota engine and transmission. It was a fantastic exhilarating ride and if I didn’t live in a NYC I’d probably own one. Did the Commuter car components (though tweaked) take anything away from the car? No, in fact it made it affordable and reliable.