Maybe MP5, I don't see anyone using that thing ever.

If you're good with the AA12 then the PM9 will be a breeze for you as it's an up close hipfire gun, although once range is whacked on the hip fire goes quite a decent distance.

I find the MP5 harder to do consistantly well with out of all the smg's.

Mp5 I'd say.

The pm9 is good lol the hip fire is ace.

If you're into pain I guess you could try to get the PM9 or MP5 gold.

I'd pick the P90 if I were you - its not the worst but certainly not the best - and you don't see it a whole lot. At least going into fights you'd have some chance of doing well.

My thoughts anyway.

PM9 and MP5 are pretty rare, at least in the games I've seen. I've tried using both and found they both are pretty underwhelming. The UMP and P90 are my two best SMGs and seem to perform well in a variety of roles. Most noobish is the MP7 because it requires hardly any skill to use. Ridiculous fire rate and accuracy with no kick what so ever and the ability to be used all the way across the map with the effectiveness of some of the better assault rifles. This thing is like a mini rapid-fire sniper.

The most used SMGs are the UMP45, P90, PP90M1, and MP7 from my experience, so the MP5 or PM-9 are the ones to go for if you want to be more unique and not part of the herd.

MP5 with suppressor while using range does wonders. That with Scav Pro, Quickdraw Pro and either Sit Rep Pro or Dead Silence Pro.

I have all SMG's gold. Matter of fact i've got 14 or 15 gold guns. Instead of prestiging i collected gold weapons. Not as shiny and nice as the gold weapons on Black Ops. I kinda like all the SMG's Whatever works best for you really.