I always think Crota was the best followed by EoW and SotP. The mechanics are quick and easy to teach promoting shurpaing and carries. All 3 take only 45min-2 hour to complete so you don't have to worry about people dropping out cause they have to go do something or their impatient. Crota had some of the best weapons and coolest looking weapons/armor (especially Y3). Crota had some of the coolest encounters and set pieces, I still enjoy the lanterns.