My favorite and the only map that I play a lot is Nuketown 2025.
Yes, I am a spawn camper and a tricky one at it too. It's a small map and with the additional players in NukeJacked, it makes it easier to get enough kills for some of the best scorestreaks in the game such as Loadstar, Dogs and Vtol Warship.
Once I get a loadstar on Nuketown, it's over. Say goodbye to respawning I guess, heheh.