I used to belong to the "If its brown on top, it's still cooking, when it's black on top and brown all the way through, it's nearly done" club but have dropped down to the medium rare/medium over the years. So, I started with well done and moved to the medium rare side.
I use a 78,000 BTU gas grill with a wood chip box that I sometimes put charcoal in for flavored smoke. On the other side of the grill from the smoke box I have a large cast iron griddle, completely flat. I heat it hot, hot, hot. I have a round, flat, cast iron plate that has a handle that I heat up hot, hot, hot.
I start off with my steaks room temperature and marinated over night with mesquite liquid smoke or dry rub. I like my steaks, sirloin or ribeye, to be at least 1-1/4" thick, maybe 1-1/2" if it's a good day.
I throw each steak on the hot plate and let it sear with the other hot plate on top of it. For just a couple of minutes. Then it goes over to the grill side over the smoke box while I do the next one. I don't sear them to "seal in the juices" I do it so it doesnt stick to the grill and fall apart when I turn it. I keep it on the grill for about 4 or 5 minutes, then turn each one over and if I'm rushed, I might place the hot plate with a handle on top of them, marks them with grill marks while speeding up the cooking.
If they flare up more than I want them I usually dribble a bit of beer on them, none of that water spray thank you very much !!! I do use the water to cut the flames down on the smoke box if that's a problem.
I like my ground beef to be 85% minimum but my wife wants it "Healthy" so we usually get 90% or even 95%. For hamburgers on the grill I insist on nothing less than 85%, I don't have any trouble with it falling apart but it is hard to keep it from burning without any fat in it. If you drop down to the cheap stuff at 70% or 75% you will find there aint much left except a greasy spot under the grill and a smoke cloud hanging around you when you are done.
Dan R