Just hopped off after a ~9 hour session, I just started the Trevor missions but decided it was time for a break since I have school in the morning. Anyway, this game is amazing! So much fun, it looks beautiful, the cars and handling are great! The fully customisable clothes, hairstyles, tattoos and cars are a welcomed return. The three main characters are all interesting but, even more so, I have already met many side characters that are just as entertaining or aggravating. IF there has been one down side it would be the fact that for how big the map is, the city is quite small in comparison.
It has been a long time coming but finally it looks like a GTA game will be able to reach and surpass the greatness of San Andreas.
EDIT: Also, the 3 character system has been really awesome so far. It adds a whole new dynamic to the series and makes missions a lot more enjoyable. I can't wait to see how much more it evolves in the later missions