Full range speaker recommendation

If new, Spendor Classic 2/3.  If you look for gently used, you could step up to the Spendor Classic 1/2.

The Focal Aria posters are a waste - what a joke. Higher end Focal - sure. 

I can't recommend the Sonus Faber Sonetto VIII enough - with the subs you will fill in the very lowest the towers don't but they have EXCELLENT bass extension and super clear mid and upper ranges.

I had Maggie 1.7 and now 3.7i with dual subs in a 12 x 15 room and they sound fantastic

Following johnto’s comment and responding to an earlier poster, there is absolutely no reason why a pair of Magnepans will not work in that room.

Separately, (Saul Cohen), it’s not that the Watt/Puppies are difficult to place, but they require very patient and accurate setup. However, you could still find them a mite unforgiving tonally.

@blackbag20 +1

I generally refrain from commenting on something, unless I have firsthand experience. However, in this case there is a bit of reference and context. 

I met Jim Salk a couple of times at audio shows and listened to his different models. I really wanted the SS 8's (~$9,000); the latest was the SS 9.5 floor stander. Retailing for around $12,000, they were some of the best speakers at that show. 

Long story not as long ... the newest Salk offering is the BePure 2 ($6,000). According to Jim Salk  "this design is the best sounding speaker we have ever produced". To me that speaks volumes, and I plan on getting a pair in the (hopefully) not-too-distant future. Hope that helps.

Best wishes and Happy Listening!

P.S. - Jim Salk is a professional gentleman, very knowledgeable/helpful, and willing to answer any questions. Disclaimer: I have no affiliation with the company whatsoever.