co-signed ...
you should look out fro some direct field monitors, many people underate this factor ... but it's one of the most important parts in a home studio ! I was really amezed when i got my Event TR8s ... and i'm still supprised how much my sound has developed since that. These monitors are precision tuned to provide flat frequency response and uncolored sound, giving you a true sonic reference for mixing. So when you mix on a good monitor, you know your mixes will translate accurately to other playback systems
for 600$ you'll get some nice biamplified direct fields, my favourites are Genelec, Mackie and Event !