Here's what I use at the moment (or what Im planning to use once Ive levelled up a few things):
BASE & CAP: AR/SMG2, RUNNER1, MONO3
RES: AR/SMG2, MONO3, 6th SENSE 3
BOMB: AR/SMG2, MONO3, RUNNER1 (Sometimes TRICKSTER but I rarely get to see the bomb so Ive stopped this now))
TDM: AR2 (Sometimes AR3 depending on my confidence), RUNNER1, MONO3
TSNE: experimenting with this mode at the moment but I use a combination of the following:
NARC3, MONO3, CQC3, 6th SENSE3 (all depends on what kind of team we are up against)
Also considering levelling up my handgun and the auto aim skill to see what thats like.
I think things like MONO, NARC and 6th SENSE are essential for great teamwork but was just wondering what you all think.