I loved While Guthix Sleeps because of the epic storyline, and fantastic rewards, along with the amazing locations (Ancient Guthix Temple = <3) I also really enjoyed The Chosen Commander, due to the real feeling of acomplishement when you saved the Cave Goblins from Bandos, and Glorious Memories, due to... well, I'm not really sure, I just enjoyed it. Another good quest was Love Story, due to the laughs, and Blood Runs Deep, due to the combat-heavy storyline, as well as the tragic losses.