I was happy to get deathbringers..eventually got 4 of them, then went on to get the Saggitarius bow, the crowsbows with all their ammunition, all the regular bow ammo, and then the Tournesol.

I missed the silly spear due to opening one too many chests and haven't done a second playthrough.
I didn't like the secret area of the Henne Mines although I did go there several times hoping I would get a Zodiac spear from the chest there that can have one although the chance is very rare.

I did try the pole for Penelo.I build up all my characters so I gave her one and she was decent although not spectacular.
I gave Balthier a gun and hasted him as he's somewhat slow with it.
I gave Fran the Saggitarius bow and hasted her as well as often as I could.

Good luck.