For fighter I go always for this.
I go for spirited roar because it gives you tons of damage instead crit that is always countered by the oponent's gear; might goes better with SM. About WFF and Quick Attack, I preefer using quick attack for reaching the target and then Kidney Shot for stunning. With the points taken from Quick Attack, Final Flash and Big Bang Attack (The last two seem useless for me, Energy Attack falls a lot in high levels if u go full Damage) I maxed swiftness because I really like being invunerable and well, I think that's all. I usually recommend going full pvp because it generally isn't difficult to lvl with a fighter.