I think slowplaying is a delicate situation which I think you already have a good grasp on. My only comment is that you're more referring to the cards and what to slowplay. I think you should also be considering WHO to slow play. Have a maniac at the table and flop a great hand? Slowplay his ass. Let him get aggressive on you.

For example: Say you flop the boat with JJ on a flop of J55. If you're in hand with a maniac and you know he'll bet check to him or let him bet. Some people would say to checkraise but I'd just call the bet. Let him get even more aggressive on the turn and that's when I'd say you start betting and reraising him. However, if you had bet the flop the guy might instantly fold so in this situation slowplay is good.

In retrospect, if you're playing with a calling station or fish, you obviously don't want to slowplpay, they'll just check it away. It all depends.

Something I'm still learning is poker is not about cards so when asking these type of questions you should just not be thinking about what hands to slowplay. Play poker, play the player. Learn who to slowplay and who not to.