Another good point from Vert roll, don't get sick! from memory the 6 days a year is non-cumulative.
Cool, if you are an effo with
Vb or NJs then the pay increase will be substantial, if you are with QF and have some seniority, my personal opinion would be to stay put.
Other factors such as your age and marrital/kids status are also pertinent and different for everyone.
As vert. said, upgrade ?, " maybe " , I would hazard a guess that as an expat you will be at the bottom of the list regardlesss of your time there.