Here's how good Vice City is, you can PLAY a version of crazy taxi in it (which is essentially what Simpsons Hit & Run is), but you also get to use guns, run down pedestrians, race boats, fly helicopters, wage gang warfare, blow up buildings, chase down Mafia goons, and just about anything else you can imagine.
Simpsons Hit & Run is very humorous, but so is Vice City. If you're tired of 80's pop and hair metal, take a stroll over to the Vice City public radio station for a few laughs, or read one of the many billboards scattered around the city, or take some pictures as Congressman Shrubs dresses as Martha and keeps company with famous adult actress Candy Suxxx.
Simpsons Hit & Run is a fun arcade style game, but Vice City is an adventure that will provide you with weeks, if not months of entertainment.