What is the most effective, non unique buff?

The_Light_Sider

From defense up to health over time, buffs often dominate the battle and determine the outcome, and consistent utilization of buffs is often the gate to victory, but which is the most effective (overall) in your opinion?
The effectiveness of buffs depends on potency and tenacity, as well as which characters they are applied towards, though which is overall the most effective?

Napoli

Other

I'm torn between Tenacity Up and Speed Up.

CthreeDtwo

Tenacity Up

Tenacity Up is useful in so many situations.

Dark_Helmet152

Foresight seems like it should at least be on the list. Top 3 buff IMO.

MaathFaselli_1

Offense Up

cmon guys it's 50% offense can't beat that! offense, foresight, stealth, taunt, and crit dmg, are my top 5.

RacerDejak

Tenacity Up

I love that for now.. bcause stun rebel meta and everyone have same team. Cls, r2, han solo (put another power char here)

stohelit

Other

Why did you chose just those buffs? Will probably skew the results, since you left some great buffs in "other."
At least providing the full list of buffs along side would help (so people remember what in other).

This is so character/opponent/situation dependent - hard to chose. But I guess having other be so broad makes it an easy pick. (i.e. other includes advantage AND retribution AND critical hit immunity, as well as speed up and foresight, all of which are good to great buffs).

If I really had to chose one, I think retribution and stealth.

http://gaming-fans.com/star-wars-goh/swgoh-resources/buffs-debuffs-list/
(A bit out of date, but still some reminder.)
[e.g. Doesn't mention that stealth blocks retribution.
Also doesn't mention target lock on characters.]