I swear by queueing highest level dungeon after 60 to level up. This is because the runs are easy and there's no stress anyways in leveling dungeons. The music is great and teams vary in their differences and style and you get to meet more people than PotD queues where every three runs you see the same guy again also binge leveling in PotD. When your roulettes, weeklyies and dailies are done, queue highest level dungeon for exp and gear.