Exxon Mobil
My dad would always go to Exxon stations to fill up back when I was a kid. We even had an Exxon card (Do people still get gas station credit cards?.) Also, they haven't had a major oil spill in a few years. So all things being equal, I will go to an Exxon. But usually things are not equal so I'll end up at Hess or Wawa more often than not.
I'm also one of those people who will generally fill up only after the E light has been on for at least 10-15 miles. My goal is to see how far I can go before empty is really empty. Of course, I could just read the owner's manual and find out the total capacity, and do some simple math to figure it out, but where's the fun in that? My record so far: 17 miles of solid yellow light before wimping out.