RF best damage jewel mods

So RF is effected by Burning, Fire, Spell, Elemental, Damage over time. Im just curious if anyone know what is better or they all just the same output? Is Flat damage better for RF then DoT?

Spell Damage doesn't affect RF.

% Burning goes up to 20% on cobalt base. It's the best affix. The others are fairly comparable, with %dot (12% max) being the relatively weakest affix.

Flat damage ("Adds x-y fire damage to spells") does absolutely nothing for RF since RF doesn't hit the enemy.

Maximum life 7%
Burning damage 20%
Fire damage 12%?
Increased damage 10?

Area damage too.

The order as in what gives the most % is burning damage > spell/fire damage > area damage/dot damage/all damage i think .. but do get a %life or %ES in there, as RF scales off of that, too.

Google RF and this is from Wiki:

The following stats apply to the damage Righteous Fire deals to enemies: Fire damage, burning damage, damage over time, area damage and generic "increased damage" or "more damage".

NO SPELL DAMAGE!

I've played around with Jewels and I think these are the best three mods in order: Burning Damage>DOT>Fire Damage.

And Himmel is right, the more life/es you get is a double bonus: keeps you alive longer and deals more damage. Gotta love Presence of Chayula for LL/RF!

If I'm wrong, then please enlighten me...and no, I'm not being sarcastic.

Thanks!