The difficulty of any dungeon will be completely dependent upon your role and the people you run with. Anything we say may be completely irrelevant from your perspective. Which is why every person is giving you a completely different answer.
It's meaningless to attempt to answer a question that is based off of situation and perspective, when we know neither for you.
Just do a random.
"In anything, if you want to go from just a beginner to a pro, you need a montage." /w TankSpot WTB Montage for Raiders.