I'd say for a low wall standard. you can't go anything below an LSi15 for music. I know that for $3000 I would likely get a better speaker than LSi15. But for the price, there is nothing that beats it. However, if you do go the sub route, I would definitely consider it. The SVS sub essentially makes the 8" woofers on the LSi's obsolete. The way I wired my system, a full range signal is being sent to the fronts and to the sub. Polk recommended that, but SVS didn't. SVS feared the "cascading" effect. I only wanted a sub that could go below 32hz (the LSi's limit) and really just support the sound. I have that now. For my townhome, the SVS sub is too much. In a house, it will shake every fixture you own, and that is hardly joking!!! LSi just happens to make a REALLY great satellite in the LSi9:

http://www.polkaudio.com/homeaudio/specs/lsi9/

Ofcourse, if you were SERIOUS, you might consider this:

http://www.linkwitzlab.com/index.html

the Orion. I can't because you need a lot of room for it.