[Jman28]

How long ago was the other river c/r hand?

How sure are you that he's a good player? And how good? Maybe good enough to not play against?

Against a very good but not great opponent, like I think you're describing, I call. It's close though.

On one hand, I don't believe he c/c turn with a FD or boat almost ever.

On the other hand, either you can have a flush here fairly easily in his eyes OR he knows that you float a lot, and he can call with his 66 rather than having to turn it into a bluff (Your line looks airy IMO)

I actually think you lose to 44 more often than a flush or other boat.

Cool hand.

Edit: If the other c/r hand was recent, that makes this more of a fold vs. 99% of opponents.