The goal of a studio monitor is to represent audio in the most accurate, uncoloured form it can. That being said, all speakers colour sound to some degree. Monitor speakers are designed to be as flat as possible whereas it’s assumed that consumer or Hi-Fi speakers enhance aspects of the frequency spectrum.
A pair of monitor speakers are going to be your best friend. Regardless of whether you record, edit, mix or master audio, your studio monitors will determine how well your work translates to … well, pretty well everything else out there: car audio systems, TV’s, headphones and earbuds.