What are the best classes in mw3

class 1= ump45 with attachments rapid fire and any sight (not thermal) secondary= FMG9 perks=steady aim, hard line, and slight of hand
class 2=any semi auto sniper rifle with attachments variable zoo and extended mags or silencer second primary= type 95 perks=scavenger, overkill (for second primary), and steady aim

other classes are your choice. 1 needs a good light machine gun and rocket launcher.