If so, surface real estate is a major consideration. You will want to look for a barbecue that has a few more square inches of grill and maybe a side burner as well. A warming rack would be an added bonus to keep all your cooked food at a reasonable heat while the rest of the meal is being prepared.
Some people barbecue daily, others as little as a couple times a month. If you answered a lot, a key consideration for daily users would be durability, maintenance and fuel. You will need a barbecue that has heavy duty construction, and gas and propane are the easiest fuels. A gas barbecue may be more reliable for long, even heat.