Porterhouse is great. I love it. Unfortunately, I can't afford it, usually.
For me, "splurging" on steak means going to a local butcher and getting some 1 1/2" thick Sirloin. I honestly prefer Montreal Steak Seasoning, while PeppA likes that McCormick's Broiled Steak Seasoning stuff. Of course, many times, I just use S&P. I like to get my grill good and hot, using lump hardwood charcoal. I prefer steak to be medium, so I can't get my grill to hot. Get some good marks on the steak, and move it off to a cooler part of the grill, and shut the lid and let it finish cooking that way.
I also like to blacken steak, but then, I've mentioned several times that I love to blacken just about anything.
Sometimes I'll saute some onions and/or mushrooms to go with the steak.