Best speakers for 15X14 ft room

Whats your budget, whats your music preferance and what electronics are you using?

In addition, what speakers are you using now, and what do you like and not like about them?

Aesthetix Calypso Signiture Pre Amp
Bryston BDA DAC - fed by a modified Squeezebox
Rowland 501 Monoblocks w/ PC1 DC conversion
Dali Helicon MK2

Listen to everything from Rock, Soul to Sinatra, Some jazz and some classical.

Your question, versus the information supplied is not aligned.
A 14'X15' room is 'tricky' acoustically speaking.
The speaker, while essentel is important is a 'part of the elextronic puzzle' of this kind of question.
To paraphrase many engineers, "Square ain't good"."
Pressures from nearfield cancel others creating a very non linear response. So whatever happens in this room is really more at the result of the accoustic space of the room rather than, 'at the feet' of the equipment.
Having said this, know that with judicious placement of speakers and listeners that many things can become 'magic', if we're prepared for it.ratios of 1X 1.6 X2.5, for example make life easier with regard to reflected sound. But, know this, with work all rooms can be adjusted for 'perfection'.
Call me at home for further advice... 502 618 3158.
Larry, your friend in audio.

Larry

A ton of absorption and a pair of Revel Gem2's and a JL F112