I know there was only one Simpsons movie but I feel like anyone of the Futurama movies is better. I really like both shows but Futurama is better suited for movies in my opinon.
I found the Simpsons movie supremely disappointing, and not worth the money I spent to go see it. Futurama movies are at least entertaining, and aren't trying to shoot beyond their capabilities by going into theaters.
I liked both, however the Futurama movies, especially Bender's game, are far better than the Simpson's movie. I guess that's what happens when you store up two or three years of ideas and then bring them all together at once.
I'm also sooo glad that Futurama is back. It's by far my favourite cartoon of all time, and I can't wait until the new season starts next year.