I know I can count on Regis Salon and have always left satisfied with my hair. They're very quick and friendly, but above all-professional.
They make sure you like your hair and don't go crazy on recommendations or high-jack it to what their specialty is. The price is moderate, you pay what you get and I would rather be sure I'm getting good service than risk it with a Groupon or go to a hair school where you give away half of your soul for something that isn't even worth it.