Hehehehe...for me, it was just the opposite. I had no idea how GREAT my speakers sounded until I got monitors. I mean, all my stuff sounded warm and wonderful on those JBL's, lol...I couldn't figure out what the hell was wrong with you people. Well, when the hyped low end went away, and the harshness of the mix was heard in its full sonic glory, lol...Anyway, I will say that the JBL's were still much better than the total guesswork created by computer speakers... So if it's an option to hook up some shelf stereo speaks to your computer in place of your computer speakers, I'd say do that yesterday, lol. (probably need the amp, too).
shutting up now.