A good 2 burner gas grill must have at least 2 burners. This will create a dual zone setup. If you have three or four burners, you can have hot, medium, and low temperature zones. For most barbecues, it is best to have the handle on the front, so it is easy to turn off one side to form an indirect barbecue area for a slow barbecue, then move the food to the direct heating zone for a hot barbecue. And you can keep the food in the indirect heating zone. The larger the surface of the grill, the greater the flexibility. You want to keep the heat balanced across the cooking surface. If the burners are too far apart from each other, hot and cold areas will appear. It is best to choose a high quality stainless steel or brass burner. Others, such as nickel burners, are prone to corrosion and cast iron burners are rusting.
Sear burner: generally refers to a small portion of the infrared radiation disk to amplify heat. It is best to buy an air oven with this infrared burner.
Even some expensive gas ovens do not have a lid. Without a cover, you will be very limited. There is no lid and no heat convection can be used. Some gas oven lids are made of two layers of metal with an air gap between the two layers to help retain heat.
Rotating Grill: Many foods can benefit from rotating barbecues, such as turkey breasts, large barbecues, and of course, whole chickens. Make sure the rotating motor can be stopped and then use a thermometer to check the completion.