If u look at all content like:
-Raids & Dungeons
-Pvp (Arena & BG)
-Questing
-Story
What expansion u think is the best one overall?
Tbc (60-70), wrath (70-80) or cata (80-85), the new (and old) 1-60 content doesnt count. Just the 3 Expansions (no vanilla, no new 1-60)