Meh, I like Catacombs. has some very nice gear (2 items ) from the time you acquire it to the time you reach 20+ for many classes. It also provides Favor that is very nice to have. But like others have stated, MotU is a much better deal and better by a long margin. I just felt I had to defend the pack but grab MotU because you will feel better in the long run.
p.s. The items in question don't honestly matter too much as you can find the same thing (effect) on randomly generated items in the AH or treasure chests.