Speaker recommendations for MC275


 Can anyone recommend a good speaker match for my McIntosh MC275 VI?  (Mac c2200 preamp)

Currently have the original B&W N804.  I’m looking to upgrade.  Budget is max. $12K.  New or used.  My room dimensions are 21’ x 12’ x 8’ H.  
vilet
I’m new enough to this, that I haven’t quit figured out all the details necessary for pairing amps and speakers, but it was it was recommended that I strongly consider the MC275 to pair with my Spatial audio M3 TriodeMasters from a source I trust. 
If i am allowed to mention a competitor, there are a pair of mint Proac Response 2S’s on ebay as we speak..