If you're married and your wife is solidly supporting the move, a no-tax well paid M.E. job is the fastest way to get your home mortage paid and money in the bank.
If you're married and the marriage has problems - don't go - M.E. living for an ex-pat will quickly wreck a shaky marriage.
If your wife is not into spending her days shopping and socialising and needs to work for fulfilment you had better check with the Dubai guys if she'll be allowed to work.
We had three good years in Saudi, my wife was able to work, and we came home together with pockets full of money and my wife's gold jewellery - gold rope around a woman's waist is very fetching in the right conditions.
BW