What you thikn what is better for pvp? Famas have +50rpm but LVOA-C have +2.5-3k more dmg per 1 bullet.
I love them both I can't choose. I love the sound of the Famas and the all out burst damage. The LVOA-C can be tamed and seems a bit better at distance. I'd go with talents.
I can't decide so I use both on a AB build.