I've stopped at Buc-ee's a few times. I generally avoid them now due to the crowds and difficulty navigating a 42ft MH+toad through the parking lot to the pumps and out. A lot depends on the location. The one north of Atlanta isn't too bad. South of Atlanta and the one close to Gulf Shores are a nightmare.
With Mudflap or TSD, I can usually find fuel as cheap at a regular truck stop and can be in and out in 10 or 15 minutes. The food is pretty good at Buc-ees, but not worth an extra 30 minutes and traffic issues.