I have recently almost signed with CONFAIR, after talking to my lawyer (incidentally she is my mother...) we decided that the contract was so badly written that, for some people it might make sense to work for them just to sue confair on some mishandling that they will do for sure...
In the end, I decided not to go. The bunch from WOW seemed fine but the lady in Holland was a disgrace. On top of that, the taxes in France would cut your salary 50%(no special taxation since your employer is not an airline)