actually doing T6 bounty is quite rewarding too.
some easy bounty like Field of Misery - clear khanza Den, it has 65m or 81m (if you have bonus exp pool) exp points and 400k+ golds and it has fewer mobs.
however, it will be nerfed in patch 2.1

this guy compiled list of the bounty exp & gold rewards:
http://us.battle.net/d3/en/forum/topic/13020802288