Anybody else play these? The best maps I've tried so far are highjacked, The Bunker 1965 (I think that's the right year) and Pistol Defence.
Hijacked is the BO2 map and it's big, has tons of perks, cool guns, and a buy able ending. Along with special highjacked rounds where your weapons get highjacked and you get a random wall/box gun. It's great. Haven't beat it yet.
The Bunker 1965 is amazing. I've played it for hours and I still don't have it figured out. There's boss zombie rounds, an Easter egg that I still can't figure out, and a meteorite that I can only find two pieces of. Along with a custom drop that's totally awesome. It's a great map.
Pistol defence. You start on a platform with two barricades, jug, quick revive, a .44 magnum and Max ammo off the wall. At the end of the round you teleport to another platform, including things like the box, pack a punch and more perks. You can also end up on the floor which is the best place to be. It's a challenging map with sweet pistols and even sweeter pack a punched pistols.
If you're a zombies player, WaW for PC is where it's at.