I loved the story (Just beat the game). The three gangs and the "unknown" forces controlling it all were very diverse and very well written in my eyes. The characters and voice acting were great, and there were some laugh out loud moment and a couple of shocking "damn, that's fucked up" moments, too. I think the thing that hooked me the most was the customization. I spent forever pimping out my character, houses, cars, gang, and buying businesses. SR2 (like GTA 3) lets you take the game and make it your own.
GTA 4 takes the cake in graphics. SR2 also has several annoying glitches that GTA4 doesn't have. GTA4 may even take SR2 in the shear amount of things you can do (and by "do", I mean watch: TV, Comedy shows, etc.). But SR2 really has it where it counts. I loved it!
And next, I must download the "Ultor Unkut" DLC........
