It depends on who you ask. Personally, I like this quest mainly for its story. It’s not the most challenging quest in the game. The Tree Who Stands Alone doesn’t even take you to many exciting places. Just a nice break from the action. One of my favorite quests would be ‘The Meaning of Lupical.’ You have to be a rank 21, finish Prologue Act 3: Song of the Dragon and Freedom, and you’ll have to be done with Lepus Chapter Act 1: Wind, Courage, and Wings.  This quest starts out intriguing with the introduction of Razor, a man who wolves raised. It’s the beginning of Razor's story quest and a fun, action-packed one. Hopefully, you get to that quest soon. Another good quest is Look for Vermeers Paintbrush. Check out the guide here for a great in-depth walkthrough.