Which speakers, if any, combine the strengths of Harbeth and ProAc ?

I've owned 3 Proac models and subsequently 3 Harbeth models over a period of about 30yrs.
I've owned ATC for the last couple of years.
While they have all been fine speakers, I've found ATC to offer superior timing, dynamics and broadband neutrality built around engaging and realistic mids.  
For me ATC are the more flexible, in the sense of sounding confident and convincing with any type or genre of music - classical/jazz/rock/electronic etc - which suits my eclectic music tastes.

inna OP6,097 posts
ATC is interesting. Active or passive ? Which models ?
ATC would need a lot of SS power, unless already powered, correct ?

I currently own 2 ATC models, the passive stand mount SCM19 and big(ish) SCM100 active towers.
The 19's require a decent amount of power, 120 -150W, and quality SS would be best IMO to exploit their superior dynamics and bass tautness. The 19's replaced my Harbeth M30.1's.
Ultimately, active is the way to go with ATC and I love my SCM100aslt's - but if you already own a suitable amp the passives are still great.
Which model depends on how much you're prepared to spend and what your room will accomodate. 
Definitely worth a listen to see if the ATC sound appeals.