That's how far I've gotten. I believe in GTA 3 I stopped playing it after I beat the S.A.M. mission...in San Andreas I beat all the missions but then got bored of finding all those secrets. I'm anxiously waiting for the new GTA for 360, only reason I bought the system was for that game. It's coming out in the Summer of 2008, which sucks because they delayed the game by like 8 months. It should be the best one yet.
vice city was my fave. the porno missions were funny. plus, the music was great. i didn't finish san andreas though...just didn't catch on to it like i thought i would. i remember having san andreas about a month b4 it was released in stores.
Fun series. The first is still the best for me in terms of pure fun.
Really liked San Andreas once I got past the cliche and played out story. Was good fun, though couldn't stand the parachuting and planes and things like that, that it forced you to use. Best thing about San Andreas was the mods that people put out, something about using real cars in it just made it so much better. Hopefully the next one is even more customizable, make the music easier to customize, cars and everything. Really needs to support the community. Oh yeah... and multiplayer, it's about time they put it in, that should be a must. Really the next one should be some form of MMORPG style game, now that would be awesome.