User blog comment:Sgt. S.S./Should I get Dawnguard or Dragonborn first?/@comment-3152761-20130415185352

Dragonborn if you want exploration and something AFTER the main quest. It is much better after the main quest of Skyrim, you'll know why when you do it. Dawnguard is more like an addition to Skyrim, still very good though and with a lot of cool new features.