If your trip is mostly within major cities like Amman and short drives on well-paved main roads, an economy sedan is a practical, cost-effective choice — better fuel economy and easier to park in the city.
But if your plans include reaching places like Wadi Rum or rural, partly unpaved mountain roads, an SUV gives you better stability, more luggage space, and more confidence driving on varied terrain.
If you're traveling as a group of 5 or more with a lot of luggage, a van might be the better option instead of trying to squeeze everyone into a smaller car.
In the end, the rule is simple: think about the type of roads you'll be driving on, plus the number of people and luggage, then choose the car that gives you comfort without paying for space or power you won't need.