Definately agree on the Recoil. But, the spread is there for a reason. They want to encourage you to fire in more controlled bursts, instead of just "Spray N Pray".
I can utterly [censored] with the Bulpdaun, or the Kross SMG. Those are my favorites. I'll use the CARB-9 for DMG sometimes, but that's pretty much it.
The SMG's are definately wayyyy more accurate though entirely > AR's.
I believe the spread of the AR's is causing the opposite effect to controlled bursts.
I use my SMG first to get some accurate headshots in and then when the clip runs out I switch to my AR with drum mag and spray n pray on any remaining enemies.
This is because i know it's spread and accuracy are poor, so I'm wielding it like a LMG.
They need better mid-range accuracy so it's the other way around and your SMG is the back up.