I like rotp a lot. In some ways its practically a place that goes through the different stages of hammerknell. Basically the first 2 bosses are basically the first 7 or 8 in HK (good old grug!) while the last 2 are more on par with the final 3 HK, Silgen in particular. Priest is eh... hes more for healers then any, overall pretty easy once the tanks get it down.