I sucessfully use the following Quest addons on all
Doublewide:
- name says it
Questhelper:
- TomTom navigation
- Quest items
Cabrbonite (non commercial): (I am not going to pay $ 2 a month for an addon !)
- for the map and the area
having carb on the alts is also nice to see what they where they have to loot, if you accidentially loot all on the main already.