The best speaker for a small room...at any price point.

Small Maggies.  

Limited deep bass, to minimize the impact of room nodes down low.  Cardioid dispersion takes the side wall reflections out of play.  Gentle top end for natural octave to octave balance.  Excellent performers in pretty much every respect (assuming there’s enough grunt from your amp).

@firsnot. In the area that I live, a speaker, basically any speaker, is a mere fraction of the price of the room. Therefore, the budget for a speaker (any speaker) that would work in a small room is nothing compared to what a large room will cost me. If that makes any sense to you.

 @keithr  Unfortunately, i wasn’t that impressed with anything at the show (particularly suitable for a small room).The Magico M2’s were ok, but I suspect too difficult to drive with the kind of amps I prefer. 

Im currently using Harbeth p3esr 40th anniversary with an a/d/s pb1500 sub from the 80's and a Rouge amp and preamp running nos Mullard and rca tubes. Harbeth have a surprisingly good bass on there own for there size but with a good sub the mids which is what these speakers are know for even become more alive and detailed. Theres something magical about Harbeths mid range.