It seems you've missed the most important healing addons of all.
Recount/Skada
Pros:- Shows you who is inferior in the ways of the Healer, giving you lots of pleasure as you make subtle (or not so subtle) hints to them with how they could maybe improve to one day get close to your numbers!
- Spam guild/party chat with your latest HPS, make them jealous!
- Gives you something interesting to watch so you don't get bored with that boss fight you're fighting for the 10th time while the DPS get your raid killed again.
- Haven't got a party? No problem! These addons give you hours of solo entertainment as you spam yourself with heals over and over again seeing how high you can get your HPS.
- And more!
Cons:- May cause depression if your Healing prowess is underpar.