What are you guys doing?

My biggest recommendation?
Take either an TAR-21, ACR, Vector, or M240. For secondary use either a pistol, or a Thumper. Make sure you use Marathon (this is the most important part of the class, especially when you unlock pro). After that, you can use either Lightweight, and for your 3rd perk use whatever you prefer, I use Ninja. XD (A form of Final Stand is in BRINK so that's what you want to use for a Death Streak).

I've actually had some good luck with this class in a round of Search and Destroy, so I highly recommend trying it out.