I still think 60 FPS is the point of dimenishing returns, yes being able to go up to 144FPS makes a difference but 30 to 60 is more noticeable than 60 to 100, but G-Sync is great.
I have been playing Tomb Raider with the FPS constantly changing anywhere from 40 to over 100 and the game stays perfectly smooth with no stuttering or screen tearing.
stahp
plis
It hurts to hear, damnit! It's still too damn expensive in Europe for me to buy one >_>... 1300 bucks my arse. -_-