Mainly, I'd mention Prime Chaos Orb. It's a misc with a qc skill that reshuffles monster resists, and as an added bonus it increases all damage taken by the monster. The misc's also going rare this week, so get it asap.
Blade/Lance of Thronful Rose (from the current Void challenge) compress a weapon skill that does *1.5 damage. When paired with Bloodzerkers or even werewolf's Beast Form, it results in some verynice numbers.
Infinita Staff sacrifices some power to gain a hefty sp heal based on damage dealt. Goes rare this week.
Don't know if you're aware, but we now have Quenching Bloodzerker for the water element.
Golden Dragon Head Shield provides a boost to your LS rate, so you might want to look toward something like Cerberus Ward for compression.