I have mixed with monitors for most of my working (as a DJ) life.
Roughly 4 years ago I had a DJ from holland join my online station and I was really inpressed with his mixing accuracey, and when asked he explained he mixed completely in headphones 100% of the time.
The advantages are ZERO time-lag between the beats playing and your ears hearing them, you can play in any venue and it sounds the same (so no trying to get used to dodgey old monitors flapping away), and you can listen at a lower level yet hear the music clearer (doing less damage to your hearing).
I adopted this technique immediately and have never mixed with monitors since. If I play a club, I turn the monitors down.
Just my opinion
__________________
Help support the campaign -
http://keepvinylalive.no-ip.org
Register and show you support our campaign to pressurise equipment manufacturers to continue the production of vinyl, turntables, & stylus.