Pros: Fun characters. The huge attention to detail. The world itself. It's the little things the game does that makes it so good. Walking around, you get a sense that stuff is going down, that npc's are living their lives and your just part of the world. It's funny to hear people as they are talking on their cell phones. Some talk about their dick boyfriends,while others (mostly dudes) talk about their latest female conquest. I loved the fact that they brought vehicle customization back (I missed it in GTA 4). I can't speak for others, but for me, I love pimping out my ride and going out cruising, especially at night (everything is so shiny!). Shooting guns feels right (like a GTA game). If you don't laugh at least once in you play through, you have no soul. Like always, the music never disappoints (loved that they got Don Cheto into the game XD) The vehicle sounds are top notch. I found myself lowering the music sound sometimes just so that I can hear my engine hitting the last gear
Cons: Graphics are pretty, at times. I do experience lag, especially when driving around the city going 200 mph (never enough that your like OMG! 2 fps, maybe in the 20's range.). I'll mention SPOILER, not sure if it is one, but ill warn you just in case. I like the story and the missions were fun and varied, but I was a little disappointed with the ending. I felt it could have been a little more exciting, grand, huge, but it wasn't, for me at least.
So to recap, its a super fun game. If you like GTA, if you like guns, if you like funny shit, you'll definitely have fun here. Beto out!