If you have a job and a visa for you and your wife, you will find living in Abu Dhabi and Dubai quite similar. Dubai offers more chances to spend money on the various attractions available. Abu Dhabi is a bit more quiet but also has a lot of beautiful malls and restaurants, clubs. If you shop at the upscale stores like Spinneys or the fancy malls on a regular basis you should be earning in a higher bracket. Otherwise groceries in other stores like Lulu and the cooperatives are relatively inexpensive. I dream of the shawarmas when we lived there 6 years ago. They were tasty and substantial and cost about AED 3.50. I hear that they are more costly now.