Cage match be going, although it is the best place to boost if you want peace, but we still have FFA (Free For All), it's not as easy to boost in there, but if you do manage to, it's better.
There is a higher score limit in FFA (30 kills), so that means more headshots. Your killstreaks can get kills, so they help you with challenges and sometimes, you might end up with a bunch of retards who won't try and find you