Lv61 or higher will net you the max xp/hr. Although, I find 46-60 range also works. I don't have a PLD, but I level my DRK using /RDM and spam debuff on the mob. It will resist but you will still get the xp so long it says "resist" not "no effect". I tried /nin, but some aoe will still hits me, thus I end up low hp for long time. I tried cure spam with /whm or /rdm but my mp always run low, and the cure exp is very little unless i cure for big amount, which equal lots of rest and low xp/hr. I tried /dnc which just doesn't work on lv50s, because you either miss, or don't hit for enough to recover. After the /brd self buff nerf, I found /rdm enfee spam to work the best.
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