I find myself quite few times in this situation.
Stacks are deep, i have position and everyone checked to me.

So if i bet:
- I can pick the pot without a fight.
- Only 2 pair or lower set will/can call to draw to boat.
- Q high flush draw might reraise. Lower flush might call a bet and see what te turn brings.

If i don't bet:
- I have to fold to pot bet if the board doesn't pair
- No more action will come from a (smaller) flush

Think i might have answered my own question here, but opinions are very well appriciated.