Underbog was my level 63-70 instance bit*h. I ran this place about 5-6 times a week when I needed to burn off the excess rested xp that built up while questing. It just got easier and easier to clear to the first boss and reset. At level 69 a clear to the first boss was giving 5-6% of level with rested and took about 10-12min to clear as I had to refresh my blessing just before the boss and I picked up several hundred of the sanguine hibiscus that sold for 4g a pop on the AH.