Here are the dailies that I am currently doing in World of Warcraft. It will change but this is as of right now. It takes me approximately 1.5-2.5 hours to complete all dailies (not being hardcore about it) and I earn anywhere from 150-300 gold per day. I am focusing on these for rep achievements right now and for fishing/cooking achievements.
World of Warcraft - Dailies I Am Currently Doing