Okay, I did another taste test and trial this weekend.
In-N-Out -- 11 minutes in drive-thru from 1:22 to 1:33. Parking lot full, order taker going down the drive-thru line taking orders before you got to the window. Single with cheese, fries and coke less than $5. Yummm. Fries weren't as good as I remember.
Fatburger -- ordered by phone at 12:15, walked in at 12:25 (no drive thru at this location). About 8 people in the restaurant, although the other restaurants in the area were hopping. Single WITHOUT cheese, fries and coke $7.10. I had to fill my own drinks. Still don't like their fries - taste like they have been soaked in a salt solution before frying. Burger had fried rather than grilled taste, but was otherwise okay.
That was my second, and last, visit to Fatburger.