I've been to Saddle Ranch a few times but never actually got a steak. I'll do that next time I go.
My choice is Porterhouse. It's the first steak that ever truly blew my mind so I've been trying to repeat that ever since. (you also get a lot of meat). After that I tend to do RibEye.
I also love filet mignon too but you kind of get that if you order Porterhouse.