I mean what I said. Sure, doing long boss runs I do run out of mana a lot. I need to use pots and mob-dropped MP items helps but yea you do need NM pots for heavy raids.
...grind all day...
Grinding (World mobs, PD, WS, group JS etc...) I use the odd pot, but that's it. Before I was L65ish I was having to sit and rest a lot.
I don't know if it's the improved damage meaning I don't use as much MP to kill stuff, or the improved heals meaning I don't use them as often, or the natural MND you get from gaining levels, but I am definitely not needing as many pots or rest stops.