Justice advantages?

[Delta]

I've just hit level 18 and unlocked the Justice, which I hear is a great all-purpose rifle, but after picking it up in the sale I've got kinda used to using the Sickle and not worrying about ammo :)

Is the justice a significant upgrade and worth it in spite of needing to worry about ammo management again? Should I upgrade and use it (or any other weapons) right away or would it be better to invest in strategems until I have everything I want, seeing as the Sickle seems a dependable weapon?

[Suzaku]

Bullets seem to do better against the Illuminate. Plus the piercing rounds do really well against groups of enemies.

[Brave Sir Robin]

Justice, Sickle, and Breaker are probably the 3 best guns in game and are worth upgrading simply to have some variety. It's entirely viable to just use the Sickle forever though, but the more you use it the harder it is to ever go back to having to run Resupply again.

[Vamandrac]

The Justice will tear up cyborg troops due to its armor penetration upgrade.

[Delta]

Thanks all. Yeah, I used the Breaker before this which worked pretty well (though stray shots kill instantly so you have to be really careful).

Think I probably need to experiment a bit more really, seem to gravitate to just using a few weapons and strategems (turrets, EATs and ammo) rather than seeing everything else on offer.

[Maxxe]

Imo, it's playstyle dependant:
-Running solo i prefer the Sickle due to an extra stratagem other than ammo which frees up alot of option. Also the Sickle suits the "stealth" approach that atleast I use when playing solo regardless of difficulty.
-In teams that tend to generate more resistance I prefer the Justice or Breaker depending on what role I have in the team, usually I just run with the Justice because it's a awesome assault rifle.