I think my perceived usefulness of SoL has been due to the group we've been running Naxx 10 with... 2 healers, no replenishment. Healers have been learning to be very stingy with their mana.
JoL I think it's pretty obvious why it's useful for raid damage fights.
But what I am finding is that on some fights I am doing the following:
1. Use SoL
2. Use JoL.
3. Have infinite mana
3. Spend my GCDs refreshing Holy Shield, Judgement, and Sacred Shield on everyone in the raid.
My threat exceeds even the best DPS I have run with by a margin of like 50%.
I think on bosses I'm going to go back to SoV because yeah, it is a lot of damage and I can't imagine the heals are helping that much.
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