C/C is better, however if he bets 1/2 pot here...don't you think you're ahead of Axss, J10, QJ etc a lot? You might be able to get more value with a C/R rather than C/C line. Assuming the river blanks and he has these hands do you think C/C, C/C is better because he will bluff a missed draw a % of the time? Also, in the event he does bet 1/2 pot or less, and you improve on the river do you think C/R or Betting is better on the river?

I'd lean towards C/R as there are a lot of missed draws in his range that he will just fold if you bet, and he rarely has a good enough hand to call if he does just bet small on turn.

If he bet more, then a K makes up a higher % of his range. C/C is better obviously.