We have been selling new and used audio equipment for 40 plus years, We get to see and hear a lot of different speakers. We would not go so far as to suggest what speaker is better for you over other speakers that are on the market, system synergy, room interaction and most of all personal taste are critical when evaluating equipment. What we can tell you is that a large percentage of our customers who listen to jazz and or classical own planers or ESL in one for or another.
One of the rooms that we do our initial listening and testing in is almost exactly the same size as yours and through experience we can tell you that if you put to large of a speaker in a room that size you will quickly overload the room. Right now we are burning in a new 2 channel amp ( 400 watts x2 @8 ohm) for a customer and it is hooked up to a pair of medium size planer speakers with 2 small subwoofers, some of our customers are impressed by the sound others do not like it at all, only you can decide for yourself which camp you are in.
One of the rooms that we do our initial listening and testing in is almost exactly the same size as yours and through experience we can tell you that if you put to large of a speaker in a room that size you will quickly overload the room. Right now we are burning in a new 2 channel amp ( 400 watts x2 @8 ohm) for a customer and it is hooked up to a pair of medium size planer speakers with 2 small subwoofers, some of our customers are impressed by the sound others do not like it at all, only you can decide for yourself which camp you are in.