I'm going through the collectibles and trying to wrap this up. I re-finished the Story yesterday.
Rockstar's had 3 Title Updates since the first time I finished the Story mode, but the bug which makes phone/Internet/UI stop displaying after accessing the default homepage is still present, despite their claim that it's been fixed. It's a common problem. I had hoped it would disappear, but I'm going to have to re-play the Story to get the Downtown Cab "special ride" Achievement anyway, since NONE of my purchased Properties have any kind of work associated with them. So it looks like a grind through the Space Ship Parts, Letter Scraps, and the Knife Flights and Under the Bridge spots and Unique Jumps.
Then I will probably restart the game with fresh data which apparently doesn't suffer from the property or internet bugs.
I am really loving this game, though somehow I'm just a shade less satisfied with it than I was with Red Dead Redemption. I mean, it's crazy. It's nearly perfect, but something about RDD really red-dead-did it for me. With enough new content and this economy they've got going, I'll eventually accept that this is the better game, but hey.