Well he's never folding better hands, and he's never calling with worse. So I guess the only reason for betting the turn was to charge his draws, but that's a very slim range: AK, AQ (which doesn't have as many outs as it thinks it does anyway), and A2-A5dd. That seems pretty thin, so I prob check back the turn and hope the R goes ch/ch.

In spots like this I save my turn bets for when I have a real value spot, where I turned some value to semi-bluff, or I was on a pure float.

Agree with @CycleVancouver , when I read the turn action I was thinking 'what does that bet accomplish?'

I would check back and turn and get to showdown. Folding once we get shoved on.