Limit Break Question.

[Urthdigger]

They get more powerful, for starters. Caster also gets increased radius, and healer raises the party with 3 bars. Also, how many bars you get depends on what you're fighting and party size as I recall.

[Alice_89th]

If I'm not mistaking,
1 bar for light parties, 2 in (final) boss fights.
2 bars for full parties, 3 in (final) boss fights.

Like Urthdigger mentioned, power and radius increases (I believe someone at the start of the thread posted the exact numbers). And the healer LB3 instantly raises everyone and heals to full hp/tp (but you will still have weakness).