So which is the least Evil of the companies then?
I just checked BP's site and I guess Arco and AmPm use their gas which I did not know because I always heard Arco had really crappy gas. I've been using Chevron since the beginning of the year, I used Shell before that for a few months. I haven't noticed a difference but that doesn't mean there isn't one.
What do most of you think is the best quality from the least Evil company?
Also what exactly is the difference between the brands of gas?