I cant disagree with you there Neil and in the heat of the battle I probably would stick them all in, just when you have so much time to think on here its easy to takea more cautious approach.
Id be so wary here of my pair not being ahead just due to my experiences, I dont see somebody check raising with KJ QJ or Neils own J9 but he wouldnt be in the pot now with that, he'd have already stuck them all in
88 or 33 looks a real possibillity but then again if I had hit trips on the flop and 3 diamons were out Id look to bet at it, rather than give other players the opportunity of a free card.
I would probably stick them all in but im not suggesting its the definite right move.