Which nebulite should I mount on my weapon?

Aren't their some classes that ignore would be better? Like demonslayers? I think hero's and drks benefit the least off ignore though

Demon slayers, mercedes, buccs post revamp, drks, yes, ignore isn't great on those classes.

Apparently he's a battle mage though. Ignore is very easy to get through more sources than you can get boss damage though, which is why boss damage or bust.