One word.
China.
Not that I'm planning on going there any time soon, but if you're chasing the money and don't have ties to anywhere in particular, that's where to go. FZ's ok moneywise, but the math doesn't always quite add up. If you come from somewhere where your cost of living was considerably cheaper than Dubai (most of the world, outside the big western cities), and especially if you're supporting a family on a single salary and in the R.H. seat, then don't expect to save as much as you perhaps first thought!
A lot of people who are renewing (or getting new) housing contracts are paying in the region of 100-120k AED (1 bed in a nice area) 150-160k (2 bed) or 160-200k for a 3 bed 'villa'. So if you have a family, you're likely to have to spend over your allowance, just to get somewhere to fit you all in! And that's before bills, flights home etc etc.
All I'm saying is DO THE MATH(s)!!