You'll see AA, AK there sometimes.
For me this comes down to what I think of villain. If he seems kind of nervous/emotional - bets/checks really fast or has lost a big pot recently then I'm more likely to call cos he could be lost with AA, AK, KJ.
Without too much history I guess there's enough random stuff in his range to at least make it a close call. I really think it's close tho.