Wich is better?

It's really users preference.

If I were you. Since you are posting this question.
I am gonna say aug. Good rof/power.
M4 custom has bad spray and you can just get an m4 adv.
Deagle camo isn't worth it right now for a main gun.

wrong section, depends what guns u have. ask yourself, do i need a deagle-camo? do i need a m4-c? do i need an aug? whats ur ign name

I Rather Get An "M4A1 Custom".
Wait.. I Already Have One .

M4 c = Silenced good damage and the fastest pelting gun in the game.

If you have a main gun that your good with. DEC is by far the best secondary there is.