Both are well past their peak now.
The Simpsons was better for much longer and their very best pisses all over Family Guy.
Neither!Loved the Simpsons for many a year - although the new episodes are truly dire. However, very recently my daughter introduced me to the delights of the Grffins and co in Family Guy.
So FF people. Which one do you prefer for laughs - Simpsons or Family Guy ?
Simpsons 1-12 then Family Guy
Family guy excellent one liners ... But what about American Dad?