Looking for a good full range floor stander

Mtdining, the Sabrina are excellent loudpeakers that are not designed for this size room. 

You would need a set of Daw or Alexias to provide enough air movement for this size room.

Large room = high efficiency, high spl, deep bass, physically larger loudspeakers.

It is really that simple, for this reason we recommend speakers like the Legacy Focus, Focus XD with Wavelet, or the Aeris they will fill up a large room beautifully, are they the best speakers in the price range that is a different question, they are really great sounding loudspeakers for the money that will work acoustically in the OP's very large space.

Add in the fact that the OP can go perhaps to a Legacy dealer in his state and listen to the speakers or here them at shows is a bonus.

Dave and Troy
Audio Doctor NJ Legacy dealers

@milpai 

I agree with you that the Proac D48 would be a great choice.  I had a pair of D30r's (the D48's sounded great but were too big for my room) powered by a Bryston 14b cube amp and the sound was fantastic.  At the time I was thinking about the Legacy line but thought the Proac's were much more musical and way better looking.  Hope this helps.

Twoleftears unless subs are used still way too small for the op room also not efficient enough.

The encore 3 is the only Salk that woulp work to cover that much air space.

Legacy, Tekton, Salk encore would really do the job.

Just currious twoleftears was Paradigm using their electronics?

audiotroy, to be kind you have no idea what you are talking about and judging by your dialect would not know a good speaker if it hit you over the head. Your explanations of physics and acoustics lack any semblance of reality and the way you describe auditory phenomena suggests you can't hear either.