I disagree with Michelle S for Blue & White taxi. Maybe it's because whenever I take them, it is in the early morning to the airport and they are always friendly and courteous. Much better than All Star taxi.
I just them what airline I am flying and what destination and will always drop me off at the proper terminal and accept any type of payment without hesitation. So yeah, they do the job, get me there on time and I'm happy. I'm also a fan of their new automated system. You call their number and then they'll pick you up at your last known pickup destination when you last used them and arrive within 5-10 minutes during non-rush hours. That's what I call service.