I absolutely love everything about it. The stealth is perfect which is not surprising from the house that built splinter cell. Also the gunplay is dead on, which is usually where I find GTA lacking the most.
My only issue is that after the first few days the online stuff stopped working. If I try to join any games it tells me I have a NAT problem, except nothing has changed and I was playing before. Also I have no problem playing anything else online. Lots of people are reporting this issue.
But the amount of content is staggering. I've been playing a lot everyday for a week and only have like 46 percent complete so far.