Best all-around sigils for a power build?

I'm gearing my Guardian for general PvE (I'll have different weapons for WvW). Right now I have just a Force sigil on my greatsword, as well as most of my other weapon sets, so I need to pick one more. My most-used build has a 100% crit rate, so Sigil of Accuracy is a bad choice most of the time. So far I've been looking at:

• Sigil of Air
• Sigil of Fire
• Sigil of Strength

Has anybody done the math? Which translates to the most damage?

Sigil of air definitely, since you have a high crit power build. Sigil of fire doesn't do as much damage over the length of a bossfight, and Strength is somewhat pointless since Overworld PvE doesn't really need buffs, and in instanced content like Fractals/raids, there will usually be someone supplying might for you.

Sigils of Force and Air are usually the best for power builds.Fire is ok for Open world if your weapon cleaves a lot. (Good for mob tagging)Strength is a bit meh in comparison.

People have done the math.

• Air better for longer, boss fights.
• Fire better for tagging mobs.

As a Mesmer I use both Air and Fire sigils for better burst, Air and Force are better for longer fights though. Same applies to your guardian, if you want more burst use both Fire and Air on the same weapon, if you are more interested in longer fights like bosses then replace fire with force.