Waiting for the (hopeful) PC release. Would love to play on my Xbox but I just can't see myself doing that since I don't have an X, think I'd be disappointed.
PS4 Pro. I'd kinda rather play it on my X for the better graphics, but my friends are on PS4. Looking forward to Red Dead Online. Will double-dip if/when it comes to PC.
Xbox One X. I play every multiplatform game on it, including the more sparse Japanese releases. I really appreciate having access to every language with one copy.