ump/Silencer
tmp/xmags
semtex/flashbangs
marathon
lightweight
ninja

great class for run n' gun and camping
Tar/ Silencer & Holo
1887/ Akimbo & fmj
semtex/flashbang
Bling
Stopping Power
sit rep

AR class with some 1887's
M240 / Holo
tmp xmags
semtex/flashbangs
SoH
stopping power
steady aim

amazing lmg class
Intervention with thermal/acog/xmag
tmp xmag
flash/semtex
SoH
stopping power
steady aim
I don't really snipe but, if I do this is what i use.
acr / GL
N/A
claymore/smoke
One man army
Danger close
Commando

I almost always use this class when good players are in the game.