Mine has to be Ooze Pits, it's simple design makes it possible to clear it fast for decent rewards (gold too) and oozes itself look harmless but man they pack a mean punch (looks can be deceiving), my last visit had a room full of Earthbound Oozes.. it was earthquakes after another my screen stopped shaking when we were all dead, 8 + duplicates make things go boom. :P.
The 3 bosses are challenging enough to still wipe my group sometimes or at least kill someone with the spike. I dont like heavy degen places/mobs so much so Sepulchre was something i disliked the most but then Raven's Point is nice too despite the degen. Cathedral of Flames is another one i do sometimes too, it's pretty cool but a little long, if HM were in game i bet that place would be tough.
I'd like to hear yours, if possible
