m4 for long range
mp5 for close quarters

SMGed w/th silencer id have 2 say umm... AK74u and P909(only if u are using Double Tap) and Assult would have 2 be M4 Carbine

My favorite is the MP5...

Why do people keep making all these "What's the best gun threads" etc, anything along those lines. It's all a matter of how you use each gun and which you are best with.
Just because one person says they like the AK74u doesn't mean it's the best. It's because there good with it. Go to a private match, get a buddy, and keep switching guns. Best thing to do if your un-sure.

MP5 or a AK-47 with a Silencer (Double Tap or Stopping Power)

knife wins for me all the time
when am bored its AKZ

I would say g36c!

There isn't a best gun or best silenced gun,it's your style of play.

Yh your right about how you play. When i camp on SnD on broadcast i use mp5 because they run past you and the damage is just right to take them out quickly. But realy it depends on your personal playing style.