The main ones are pretty much comparable. It comes down to a personal preference and flavor feel really.
I used Healbot for a long time, but transitioned to Vuhdu in 5.0 It's leaps and bounds better, at least in my opinions. Grid and Healbot are still fine options, but I'd agree with NightZero, and recommend Vuhdu.
Former R Druid main, and he's still my main alt.
I use Vuhdu on all my healers Druid, Shaman, Priest, and Pally
I love Vuhdo for my resto druid, both because he's a troll and because it has easy HoT management. Keeps track of Lifebloom stacks, Rejuv HoT, Regrowth HoT, Wild Growth for each target affected, and even makes for easy debuff management by changing the color of the affected players.
vuhdo rhis addon was designed for druids at the start it still is the best but its good for all classes a mega big config but go step by step and you'll get there
Same Shit Different Day
Vuhdo and Weak Auras is something I'd suggest.
Here's a link to a kill video, where you can see our Resto Druid's UI. He's using ElvUI, Vuhdo and Weak Auras as the main add-ons.
Last edited by Danishpsycho; 2013-10-13 at 01:33 AM. Reason: Forgot the link durp
Get Vuhdo. But remember to go through all the option pages with "/vuhdo opt" to get the setup that suits you best.