guess it really depends on your group more than anything else at that point.
My least favorite, is that one tiny platform in ToP with the tornado lich + 2 others. Especially as a healer, it’s so hard to see what’s going on, and then you can barely do your job.
It’s honestly an affix that makes me hate the game in some dungeons.
Thank thanks. 
(edit: wat, thank thanks? I don’t even know if I was trying to say something else, or just typed it twice lool.)