I found the South park to be extremely easy and rather boring because of it. Yeah, it's funnier but the jokes only make you laugh for so long. The Simpsons was actually more difficult even though it is older and has less ramps and stuff. Also, the Simpson's will sell better later on. The price is high for the typical game but if it is as good a condition as you say then it is worth it. Having played both, I would go with the Simpsons. I am a fan of both so that is not a factor. I would have purchased one last month but it sold before I could get it.