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
Definitely a vote for Spender D9’s too, but check out the Magico A-3’s, Wilson Sabrina(used) or KEF LS 5o. The Vandersteen Treo CT should also be considered as well IMHO. You may appreciate the new B&W series as well. IMHO All depending on room size and preferred listening levels.
I know this is late & the speakers have likely been bought, but I have a MC275 pushing a pair of Sonus Faber Olympica Nova V’s and the sound is magnificent.
here in whittier california, there's 'hifi haven' which has been in business since the late 50's! they favor 'martin logan' speakers! is this a good match??