I've decided to stay at level 70 this time instead of advancing to the next prestige. I love the fall camo and don't want to have to unlock it again, and I eventually want to complete most of the challenges. Besides, I have no use for additional classes. A few days ago I got the "All Pro" challenge, headshot 2 enemies with 1 bullet. The extended mags on the AA-12 shotgun are insane. It triples the amount of rounds.
You're a real point and click type of killer huh. Tube and Danger Close...what just to make sure?? Boy oh Boy.
I like the leeway danger close gives my aim. Also, it is not as big an advantage as you might think. Most of my kills come from the Scar + FMJ portion of it. I have found the Tube to be a potent psychological weapon, however.