I haven't changed out my items in a while since I OTK everything, but I use Cure, Fujin Potion, Fujin Tonic, Revive, and Revive Light.
Cures are basically the only heal item that's worth a shit. I actually read about why that is recently, which is that the recovery stats have become so bloated so all the healing items heal close to the same amount. The Mega Cures probably heal like 500-1k more, but when you can carry 3 times as many Cures, it becomes a bit ridiculous to take something else. 5x Fujin's is almost necessary for oh shit moments, and revives are always nice. I have 10 Crescent Dews left, but I'm saving those forreallyhard content. So far I've only used 2 and that was for Maxwell.
I really need to go through all my items and clean out the garbage feathers and claws and shit that I'll never use. I figure the worst case scenario is I go in with 3 Zelnites and farm them up in an hour if I sell some that I end up needing; plus that gives me something to do.