I worked for MK (in crewing not as crew) for 4 years and I have to say they are all the nicest guys you would ever meet!
When I was there they were treated exceptionally well, but now I think generally they are treated ok, they stay in some of the top hotels, yeah had crappy economy flights but sometimes they are lucky enough to get business/first class, can't say anything about the salary think it is pretty good, the guys seem to live pretty well, overall I never had any complaints.....but just ask yourself why are alot of the guys leaving now, I have stayed in touch with a number of the guys and find out all the time who is leaving, some of the guys I thought would be with mk forever have gone.....why??!!