So you have started taking an interest on barbequing after probably attending one at a friends or relatives house and now you are thinking of buying one. As will all hobbies and products, you find out many small details about them which makes you think that it is too complicated to understand. If you have even the slightest perfectionism in you then you will be bothered about not knowing what each term means when you set out to buy something. When I decided to build a computer for the first time, I was amazed at how many small details matter when you decide what brand and what component to buy. It rarely ever was bigger and more expensive means better and it was mostly about finding something that catered to your taste instead. All of this applies to a gas grill as well.
The very first thing you need to take into account is your budget. If you have a small budget then you might not have many choices to choose from anyway. The best way to have more options is to increase your budget before you do any sort of research. You can get a decent gas grill for about $500-$1000. Getting a decent gas grill in this range might mean that you will have to look for some used products too since gas grills are a bit more expensive than your typical charcoal grill.
Another thing that you need to be careful of is the gas grills size. Most gas grills are recommended to be put outside in a garden or yard since barbequing produces a lot of smoke and you certainly would not want any of that inside your house. Size might not be an issue to most but some people might be concerned with the amount of space they have. That is just gas grill size, another thing you need to see is the capacity of the gas grill. This matters depending on what kind of parties you intend to throw. If you plan on cooking just for yourself and maybe a guest sometimes then a small sized grill is perfect for you. If instead you plan to throw large parties then you will definitely need something that has a larger area so you can cook a lot at once.
One important thing that defines the quality of best gas grills is its supplied standard warranty. If a brand is offering you a small warranty of roughly about a year then I would recommend staying away from it. Not only is a cheap brand hazardous for something that uses gases and flames together, it would also not produce good food due to its build quality. A brand that instead offers a higher warranty would never do that unless they know they are producing top of the line products. They are also safer. Safety is an important thing to consider when you are buying something that can quite literally blow up if not taken care of properly.