Verruckt definately.
Nacht Der Untoten is too small and so there isnt alot of good strategies to use. On Verruckt there are alot of different options you have to choose where to go and lots of camping spots
I like nacht but u know it gets borring cos had the map for so long, so the obvious choice would be veruckt, I like em both, I think if nacht had a perk machine wud be good.
i have both maps and they are eqully addictive as they both have their good and bad points, Nacht is good cos its smaller and easier and the random box thing doesn't randomly blow up and appear somewere else!
Verruckt is good cos it is more challenging and for experienced players only i think...