as long as it's up to the quality of the Nieuports i'll go with the CSM one, and probably 2 or 3. if CSM's release pattern is similar to the Nieuport they'll cover any significant variants and have the 'crowd pleaser' obvious choices for markings (i'm looking to build planes for Benno Fiala von Fernbrugg and Josef Kiss, possibly more).
if the WNW kit is a significantly different variant to what's available from CSM, or has different markings, i may get a WNW one.
there's some small hope it could be a C.I, but the landing gear looks more like a D.I