Questionable BB defense, pf question

[KittyKat]

Folds to the button, a 37/21/3.17 with a 57 blind steal number. I've played with him before, but he hasn't done anything unusual enough to warrant a note. bb is a 27/12. I'm in the sb with JTo, and I 3 bet.

Is this an ok 3 bet, or should I be folding this?

[Machinehead]

It's not a bad move to make sometimes against this type of stealer if he can fold a hand postflop. But I think sometimes is important here. Usually I would fold this. The BBs fold to steal % is something else you want to look at.

[True]

I think this is fine against this player. With JTs / A8s type hands I think calling may be superior.

True