I realized that there is no generic tips or hints thread. If you have a general question, ask it here, or post tips on beating the game here. Heres my first tip.

The equipment I used to beat the game:

Rikku:

G-Grid: Black Tabard
D-Sphere: White Mage(with Black Mage mastered)

Other things:

Crystal Ball (Magic +50 I believe)
Crystal Bangle (HP + 100%)

Yuna:
G-Grid: Undying Storm(I think thats what it was called. The plus 15 attack and magic one)
D-Sphere: 100% Gunner

Other things:
Diamond( I think) Gloves(Defense + either 40 or 50 not sure)
Mythril Bangle(HP +60%)

Paine:
G-Grid: Undying Storm
D-Sphere: The all powerful 100% Dark Knight

Other Things:
Mythril Bangle(HP +60%)
Champion Belt(Attack +40 I think)

Well, there ya go. Feel free to chime in other people.

Hmm... I'll allow the general tips, but if anyone has any questions, they really should start a new thread for them, or look for the answers in an existing thread. You can also find more General Tips in the pinned thread titled "Submit Something for FFShrine."

Here's my general tip: Always make sure to do as much as you can of the Via Infinito before starting New Game Plus. There's just so much good stuff down there that you don't want to miss it.