Once they fixed GTA IV for PC (which took forever), it absolutely blew away the consoles. It was an absolute mess, however, for several months and it made me sincerely regret pre-ordering it for PC.
I already beat LA Noire on PS3, probably won't bother getting it for PC since it doesn't have the same fun factor that GTA has (running around blowing stuff up, screwing around, etc.). LA Noire has a good story and unique gameplay, but it gets too repetitive and, once you get to the end, you realize that all the interrogations you did and arrests you made were all completely pointless. It would've been nice if the story weren't so linear.