What stats should a Ranger go for?

[RivalNightmare]

What the title says, I have no idea what they should go for. In my skill tree I am just putting points a bit all over the place...

Should they get the Ability stat? It seems like the Skill Tree wants me to.

Though, also R. Def and R. ATK...

[jooozek]

R-ATK and R-ATK and R-ATK.

[Alenoir]

Get Weak Bullet at Lv1, 3, 6, or 10; Get at least one Weak Hit Advance to Lv10. Rest up to you.

[GrieverXVII]

http://www.pso-world.com/forums/showthread.php?t=196898&page=16