C4? Try engineer mines too. I threw out all my stocks near the mcom before getting raped by 5 defenders and almost not make it. Then suddenly KABOOM! All of them were killed. I was puzzled at first since I havent got the chance to shoot anything. It turn out that a friendly uav missile trigger one of the mines and set off a chain reaction. It took out their mcom too. For 5 seconds or so my screen keep flashing kill text. Awesome combo lol.

^ Is it bcouse it has the widest scope? Making your view better than other. However that is I still love the m24 than the rest...

hmm, cant totaly agree with that however I can list the best weapon for every other class based from my experience:

assault : m16 has lowest recoil, tight accuracy and great handling.
medic : m60 has good damage and accuracy over distance if fire in short burst or tapping.
engineer : pp2000 has a deadly rate of fire and some good accuracy if doing it correctly.

ah then it is personal preference, for me the ^ sign is good because the crossair sometimes gives you blindspot over the lines. as for sv98 the numbers of ammo it hold before reload is a blessing when you stalking multiple enemies or in my case missed alot of headshots.