Tex-amp said:
...what about imaging and soundstage differences in the two speakers, or the tweeters' control over highs, separation of instruments/voices, how it is voiced, etc ? Room treatments aren't going to do much there.
I'd take the better speaker first to enjoy those differences and do the room treatments second.
It is an underappreciated fact that you cannot enjoy the fine attributes of good speakers in a lousy room. A regular contributor to audioholic,
Richard Rives Bird explains.
I highly recommend the article, but to summarize: room interactions can smear the image, distort the soundstage, allow echos that ruin voices and more.
If you don't take steps to optimize the 'invisible component--(the room), even the best audio system in the world will give disappointing sound quality.
The upside is that improving the acoustics of your listening room is relatively cheap and not that difficult.