I use Flying J. Often the other stations that advertise a lower price are advertising a cash price and the credit card price may be 5 or 10 cents above the advertised price. If you use your FJ frequent fueler card (or whatever it's called) and a credit card at Flying J you get the cash price and the 2 or 3 cents discount. Works for me.
Bob, Sandi & Marmaduke the Big Pug
SW OREGON 2004 Journey 39K, 330 Cat
If towing: a 2006 Mini Cooper or 1995 Wrangler