Claiming that if you like single player games you should rent them is one of the most idiotic arguments I have heard this week. If everyone rents them where are the sales going to come from? If there is no sales then why keep making single player games.
I will buy this and the GTA port if I get to keep my online stats for PS4 even though I have them for PS3. Both games just struggled a bit on the PS3 and I'd have preferred both waited for the PS4 release but I wasn't going to wait at the time. If GTA doesn't carry the save then I will just get it on PC and mod it.