Family of Zeilinger-Horne-Greenberger "W" states lead to stronger   nonclassicality than family of Greenberger-Horne-Zeilinger "GHZ" states
  The N-qubit states of the W class, for N>10, lead to more robust (against noise admixture) violations of local realism, than the GHZ states. These violations are most pronounced for correlations for a pair of qubits, conditioned on specific measurement results for the remaining (N-2) qubits. The considerations provide us with a qualitative difference between the W state and GHZ state in the situation when they are separately sent via depolarizing channels. For sufficiently high amount of noise in the depolarizing channel, the GHZ states cannot produce a distillable state between two qubits, whereas the W states can still produce a distillable state in a similar situation. 
Aditi Sen De, Ujjwal Sen, Marcin Wiesniak, Dagomir Kaszlikowski, Marek   Zukowski