As Wynonna Judd said to Hank Hill in the episode ‘Peggy’s Fan Fair’: “I was raised on charcoal. I’ll die on charcoal. So back off!” 
I will add to the recs of a classic 22" Weber Kettle grill. Gas grills are nothing but outdoor stovetops.
A kettle-style charcoal grill is very versatile. Besides simple grilling, you can arrange charcoal so that there’s indirect heat, mix in wood chunks with the charcoal, and slow-smoke meats. It’s a little trickier to get even low heat than say, a Weber Smoky Mountain bullet-style smoker, which I also own, but I’ve barbecued a whole beef brisket on my Weber kettle grill with outstanding results. I even bought a pizza oven insert for my kettle grill and made some damn fine pizza.