i like the ACR with red-dot and silencer, and do the best with it but i have a soft spot for the UMP45 with kick and silencer.  love that gun.  good power and i actually like the slower rate of fire.  makes it kind of a AR/SMG hybrid.  fun to play with.

I've only used the AK-47 recently but I do like it, going to get that one with my next prestige token.

The G36C is my favourite of all the guns, although towards the end of my last prestige and this one, I've started using the ACR..Never really liked it before but liking it now.

Favorite as in BEST:

1: Type 95
2: ACR
3: G36C
4: Mk14

Favorite as in ... "Weapons I like (but don't necessarily use because they suck too much)"
1: CM901 (Worst weapon in CoD history for it's class)

2: Mk14 (I actually use it a lot)
3: RSASS (LMG runspeed and up and right recoil makes me just stick to the Mk14 for semi)

4: MP5

Mine is

CoD 4- AK-47. That gun was beast and you could get it golden. Also really liked the Deagle, best pistol so far in CoD

WaW- Haven't played World at War much but I really like Springfield and Gewerh 43. That game was really good for sniping.

MW2- Vector. That gun was like MP7 in MW3 but a bit higher recoil and rate of fire

BO- AUG was awesome, very nice fire rate and damage and in my opinion the best looking AR in CoD.

MW3- I really like a lot of guns like M1887, AA12, PP90M1, PM-9, MK46 and G36C but my favourite is P90.

So in 6 1/2 minutes nobody responded to your thread thats been made a thousand times here before,  so we're pathetic?  The irony

ACR with the SCAR in close second. Some nights the ACR just doesn't seem to kill anybody for me. Other nights the SCAR won't. Some nights neither do and I end up beating my wife.