Do you already have an amplifier? If not, you should just stick to near-field monitors. Go to a Guitar Center or Sam Ash or whatever pro-audio store if you have one near you, and listen to what they have. There are good active speakers under $300 a pair, KRK, Behringer, Mackie have some in that price range. If you some some you like there, check the price on them online and ask if they will price match if you can find a lower online price. Emotiva also has their
4" woofer Airmotivs on sale now for $314 a pair shipped, they won't have much in the way of bass, but it doesn't look like you listen to bass heavy music anyway.