When I have time or a really good cut of meat (then I make time) I use the Sous Vide. Find the temp that works for you I like medium rare. For my taste and machine I set the temp for 128. Then reverse sear in cast using clarified butter. In a separate skillet I'll melt butter for a quick basting of the steak and then let it rest for a few minutes. While it is resting I will saute some mushrooms and onions the the butter I used to baste the steak.
Seasoning is usually very simple course salt, fresh ground pepper.