I'm with stee01, most of the nay sayers in here seem like graphics whor-es. Saints Row 2 was more enjoyable for me personally than GTA4, try actually playing the game and try not to act like a 10 year old crying cause you crave the okay graphics of GTA.
It's not bad to want good graphics. And yes GTA is much better in that department even with all its problems, at least it doesn't freeze every few seconds.
That being said, I like the missions and all the stuff you can do in the city. And for that reason I'll keep playing it. Hopefully a patch will be released that fixes the crashes.