Speaker recommendations 10 to 30k and no beryllium

Try one of EgglestonWorks speakers - New or used.  I have the Rosa. Bought it used.  Amazing for a room about the same size as yours.

Joseph Audio Perspective2 Graphene. Amazing speakers, amazing. 

Revel Salon 2 or Studio 2, Usher x-tower or BE-10 or BE-20

PAP Trio’s, will need less room treatments than a box, wall of sound, high efficiency. Lots to like.
 Best. Dave H 

@smodtactical Perhaps you could list your amp and source? That might help focus the recommendations.  Rugged, dnamic box speakers helps some, but there are still a *lot* of options out there in that price range.

Also, new or used price range?  I'd personally be tempted to try used big tannoys or classic audio, but I err on the side of sensitivities in the mid-90s.