Thanks Prosecutor. You did not give a u-tube link. Were you referring to one I should already know about?
Sorry about that.
Vuhdo or grid are both better options than heal bot.
It's totally a personal opinion. I have not used Vuhdo, but the list Loratabb put together is nice. Of the three I would put Grid at the bottom. Vuhdo looks to have more features, but that's not always what makes something the best. Healbot gives all the buffs/debuffs, range finders, cooldowns, mana costs, predictive healing amounts, recommended HoTs/Casts, etc. so those details aren't worth chosing a different click-cast addon if you like the feel of healbot. I've seen all the features execpt the mouse-over targeting, but I've made macros for that and just used healbot to run the macro.
I've used healbot for 5 years, so it's what i've grown up with and I'm sort of bias that way.
Jesminia points to some good tips, which reminds me that you can setup themes that switch settings based on when you're healing a 5man dungeon with bigger frames and more details such as casting your dispell magic one by one versus raid healing 25-40man with smaller bars and tossing a 39k mana Mass Dispell. just a single example, but it's nice to swap themes based on the situation. Healbot is also spec dependant. On my shaman I have it setup for spells castable in enhancement versus full healing setup for restoration raid heals.
Anywho, my breaks over for now...back to work :D
Edit: Healbot even summons a random mount and a random vanity/combat pet !