If you want to take the guess work out of cooking the perfect steak. Get yourself a sous vide and a heavy cast iron skillet for searing. Edge to edge perfection. None of that ring of well done meat around the outside that is common. Can even make a well done steak good, but not as good as rare/med rare. Need a pan and stove top or grill that can get extremely hot. Lots of heat is required to sear a steak in 1 minute per side. Also time is needed as the sous vide takes awhile to cook the steak. Worth it though.