[Unknown Soldier]

no way you can tell whether he's more likely to give you action if you bet or check so you should bet.

You seem to be concentrating on our range which is unecessary because we have never played with villain before, we have no idea how he percieves our range (or if he even thinks about our hand at all!), so we should be playing our hand here instead of our range. We hve trips -> bet that simple really. I don't see why you are making this so comlicated for yourself. With histroy, and the knowledge that he's ok then our range matters more, but not here. We can always bet AK here and always check KK and it won't matter if we have never played against villain before.