I was a huge supporter of Quest Helper when it first hit the scene. I still like it but have gotten to love Carbonite.

I like the way it shares party information and tracking. It has quest waypoints (no ants) organizes minimap buttons into one button that expands as well as a cart3 google like type of map. Took a bit to figure out all the configurations to make it do what I wanted but now that it is set up it works like a champ.

It is bloated but my Master is set for Ultra Video (Shadows off) and toons at minimal I still get 60fps in Dalaran on my main with no hiccups.