Guild Wars 2

so I run full zerk grenades and just wondering for my offhand sigil should I be using 5% crit or sigil of fire.

both seem good to me I just cant decide which is better for long term dmg.

2.3k hours as a grenade engie I know the class im just not 100% over these 2 sigils.

sigil of fire does more damage I think but will mess with your mainhands sigil so if you don’t mind that sacrifice then go fire but if you require the main hand sigil to go off wwhenever it’s off CD then tale 5% damage