[corsakh]

First thing is a read. Metagame or not, the only thing to drive my decision here will be if he is calling with PP for set value and other garbage here.

In other words I am much more inclined to cbet a CO here, since there is a much bigger chance he is a tool and does not have a strong hand.

UTG, I am c/f a good tag.

PS Matrix: I dont see 3betting JJ as sacrificing anything. Its a protection move against overcards, like one with TT and 99. We are fairly confident that our hand is the best but more often than not we are going to a see a bad flop and being OOP does not help our case. The hand is very vulnerable from the blinds.