I find that if you do even minimal exploration, mana is rarely an issue. I'm packed with 24 Mana Pot I, and roughly 10 or so Mana Pot II, while health pots are quite the more rare. Besides, if you are working your way through a nearby evil outpost or RC-tower, it's easy to just warp to the entrance, exit, visit the settlement, Ilari-heal, walk back and warp to the room you were in. Takes a bit more time, but saves a pot, if you're not pressed for time.