Stupid post.Yes, it is true, monitors are widely considered the preference. When I've used our uni studio I've pretty much solely mixed with them, however headphones are bloody good at getting an intimate sound and, possibly most importantly, 90% of your audience will be listening through them. Heck, some studios mix on iPod earphones simply because most people will be using them.
You don't optimise for yourself if you're planning on other people to listen.