The most analytical systems I've had, they are not ideal speakers for recreational use. While they brought out details and buried tracks in songs I thought I really knew, I was never able to relax and be completely absorbed in the music. I was listening to the sound, and the quality of the recording (or the bit rate of the rip) instead. If I had these for a long time, I bet they would start to influence my listening choices.
All that being said, I understand what invaluable tools these speakers are for recording and mixing professionals, and have no doubt that if a mix sounds good on Yamaha NS-10s, it sounds outstanding on just about anything else. This is a system that I respect, but can't love.