User blog comment:TheInfamousLyingHarlot/Your Favorite Questline? (Skyrim)/@comment-4990165-20130522111658

Thieves Guild, hands down. I love the distinct personalities of each guild member and every quest. Even the small radiant ones where I've picked the same pocket 5 times, heh. Next to that, it's a toss for the Companions & the Dark Brotherhood.