I was about to argue your point, but then I saw you mention the G3
As for my combos, they all vary, but since I am a major S & D player, I usually go with:
G3 Silenced
C4, Stopping Power or UAV Jammer, Dead Silence
M4 Silenced
C4 or Bomb Squad, UAV Jammer, Dead Silence or Extreme Conditioning
M40A3 Sniper
Claymore, Stopping Power, Iron Lungs or Eavesdrop (saved my life tons because people are always like "Im about to knife their sniper!" and so I turn around and no scope them
)
And last, but not least:
MP5 Silenced
C4, UAV Jammer, Steady Aim