I probably should update my earlier post. I found that it wasn't the brand of gas I purchased, but whether or not I filled the tank too full. If I try to put too much gas in the tank (when putting in more than when it first clicks off), then it's almost guaranteed that it'll stall within the first seven miles after filling up... when I don't overfill, it doesn't stall. Not sure why.
However, I am dealing with a fuel gauge needle that is no longer accurate after it goes below half tank... after that point it'll bounce around all over the place, but I think there's another thread around here that talks about this.