Even though you can make them however you enjoy them best, I prefer mine like this:
I always use freshly grind beef from the butcher.
I don't mix in spices, breadcrumbs, sauces, bacon, eggs.
Only dry seasoning on each side of the patties. Salt, pepper, and sometimes a dusting of onion and/or garlic salt.
I like my burgers done but don't mind if its a tiny bit red in the middle.
I never grill burgers directly on the wire grid. I use a grill pan so that none of the juices get lost.
Favorite toppings: one or two slices of cheese (whatever available), dill pickles, sometimes bacon (when not too lazy preparing them), onions, very thin slice of tomato, and the classic red, yellow and white.
Do you grill burgers and how do you prepare them?