I have heard that studio speakers aim to give the flattest possible spectra, whilst hi-fi speakers aim to flatter the sound (i.e. alter the spectra to make any music sound perceptually good). Users therefore use the studio speakers while mixing to detect flaws in the track, and at home will use the hi-fi speakers for pleasure.
I am having trouble understanding this argument, because surely it would be possible to mix the track to sound optimally flattering using the studio speakers, and therefore the hi-fi speakers would overcompensate and make it sound worse?
If you are not aiming for the most pleasant possible sound on the monitors, then what are you aiming for (how do you define 'accurate': if it is the live sound, then shouldn't the live sound in turn be trying to sound as pleasant as possible)?