I agree that they're better modules as a whole, but they're a little more complicated. A first-time DM is better off with something simpler (the biggest reason why I didn't suggest White Plume Mountain, my favorite module EVER).
Another good choice is Lochfell's Secret. I ran that for my group, and they totally destroyed it, until half the group fell to a random Wail of the Banshee trap, that wasn't even guarding anything.