I have a 17 year old Gen Gold, it has been rebuilt a couple of times but in my opinion the best thing that equals out a grill is a full replacement set of grill grates....they are wonders! FYI, you don’t need a lot of BTU’s to get an excellent sear. ie I never put my Weber above 1/2 cause it gets way to hot.... I also won’t own a gas grill without them! That said as long as the burners are stainless as well as the body then with grill grates your in business. You need to be carful with those “larger” grills because many have cast burners and they can rust out pretty quick....just food for thought