A good HOT grill. Charcoal much preferred to gas (because it gets red hot)) to singe the outside of the streak and seal in the juices. Kinda like the NY strip steak in Betall's picture (the second picture).
Prefer NY strip or T-bone (porterhouse). About 1 1/2" thick. Sea salted and peppered. Rare to medium rare. If you cook them enough you'll learn to tell when they're done by looking at them, and, or, touching them for appropriate softness. If the steak is getting hard it's past medium heading to well done. Bad.
Grilled out in the cold here last night. Grill four meats at once. Steak, Italian sausage, thick center cut pork chops, and chicken breast. Sensational.