Obviously, the easy in and out ones are better and faster, but I stopped obsessing over the perfect gas station long ago. I generally stick to Flying J, or Loves, or Pilot, etc., but it really doesn't matter to me. I don't worry too much, my truck has reverse, and it will come out the same way it came in, even if I have to discuss it with the person who pulled in behind me first. Most people seem to enjoy helping get you backed out when necessary, just don't trust their spacial judgment too far.
Stop worrying and go camping!