That's a tough one. The longer term thinker would try to get everyone into the same negotiating group as then they would have a long term future but I suspect that the cost would be too high for many to stomach. This is though somewhat academic as BA will not, in my opinion, countenance BASSA having rights to negotiate for MF. Their track record is too troublesome and therefore the cost of gaining such rights would be prohibitive. So perhaps I would stick with the higher salary and hope it lasted for another few years. I would also start looking for a new job!