To be honest, Fallen Order. I also think that the guy who voiced him in Fallen Order gave the BEST Vader impression outside of anyone who is NOT James Earl Jones.
Vader was fantastic in JFO. He blocked everything you did and almost appeared out of nowhere every time you escape from him. He didn’t even need to use his hand to tear apart the room meant to hold JEDI and fling tens of pieces at Cal. Not to mention the fact that he bests Cere in an instant and manages to hold back all the water in an ocean planet from flooding into his room.
Fallen Order. In the game that's not a man, that's a fucking force of nature. One that makes the person who has been your primary antagonist crap herself before being cut down in an instant. One that swats a Jedi master aside with one hand. One you don't beat... you run away from. One who needs a whole ass ocean dropped on him so that you can (barely) escape with your life.