The Yamahas
NS-10M's have a bright, crispy top end and a strong low end. This replicates the sound produced by most hi-fi speakers, car stereos, and boomboxes. It's what the people want.
I auditioned studio monitors this year and found the Yamahas are initially very engaging and attention-getting. They *seem* the clearest and the crispest, because you're gettting the boom-sizzle effect.
My listening fatigue with the Yam's set in after 15-20 minutes. By that time I'd already noticed that the mid-range, where the instruments and vocals live, were nearly inaudible.
I settled on a pair of Alesis Monitor Ones, which have a wonderfully clear mid-range, enough top end to articulate timbres, and a ported bass for the thump. I can happily listen for hours. They cost about the same as the Yam's.
One warning though: The mixes I do on the Monitor Ones do not sound the same on my car stereo and home stereo. The top and mid-range are quite accurate, but I hear more bottom-end on the Monitor Ones while mixing than I get when I play the tape back outside the studio. I adjust accordingly. The mids are where the music lives, and that's what I care about.
So
the Yamaha NS-10M's are indeed the industry standard, but there's no reason why they have to be yours. Use your ears and go audition monitors with all this in mind.
Personally, a friend's story about engineers stuffing Kleenex into the tweeters of the Yamahas to cut the buzzing says it all about that monitor.