For me, it all starts with the meat blend, but I'm not super picky. If a store has any of the fancy stuff on sale, I might pick it up, but 80/20 ground chuck is just fine.
Seasoning is salt, pepper, garlic, and worcestershire and very light mixing by hand.
For the grill, I like a flat top on a charcoal grill. Smashburger style on high heat to get a good crust, but I don't like them flattened into pancakes. Just down to 1/2" or so that you've still got something to bite into and you're not squeezing out all the fat
Sprinkle with a good steak seasoning right before they're finished and melt pepper jack on top
Toast a good brioche or potato bun with some butter, hit it with horseradish mayo, mustard, grilled onions, pickles, and lettuce. Every once in awhile, two bacon slices or fried onions instead of grilled.
Devour
How about y'all?