Hi Finals,
If you are joining Ryanair and don't know where you want to pick as your choice of base. You may be able to take a floating base contract for say your first six months. You will work five on five off and will move around all of the bases.
After a while, you could request a base. That would be five on four off. there is of course, no guarentee that you will get the base of your choice.
I am not a contractor so i am not sure, but i think the money is the same per hour on the Brookfield contract, regardless of base.
Good luck.