I haven’t grilled a “regular” burger since I started making smashed thin ones, except for a bonus pack I got with an online steak order. So easy & quick, always sufficiently cooked, yet juicy & flavorful. And the crust really makes them awesome. A hot griddle surface is key.
I always keep a condiment bottle with special sauce in the fridge, as we eat cheesy smashburgers once or twice a week. My not-so-secret secret sauce is mayo, ketchup, mustard, hot sauce, and Worcestershire. I grill onions & have tomatoes and usually jalapeños handy, plus ketchup for those who want extra saucy.