Stehno nailed it. Timf it is: Power, Resonance Control, and Acoustics. Assuming you have quality components, the cost isn't really anything to get hung up on. Buy whatever you can afford that sounds good to you (with your music, in your room). :-)
It can cost anywhere from $2k to $12k. But you can certainly spend more. But I would be sure to address the "big three" before you plunk down the big bucks (goes without saying around here - so I'm preaching to the choir).
It can cost anywhere from $2k to $12k. But you can certainly spend more. But I would be sure to address the "big three" before you plunk down the big bucks (goes without saying around here - so I'm preaching to the choir).