I voted for Resident Evil, mostly because that is the only survival horror series I've played, and even then it was only the first two. I really liked the concept of the first game, but by the second game I felt the concept got old.
If you want to count Dark Souls as survival horror, then that is my favorite.
curl-6 bet me that PS5 + X|S sales would reach 56m before year end 2023 and he was right.
My Bet With curl-6
My Threads:
Master Thread, Game of the Year/Decade
Switch Will Be #1 All Time
Zelda Will Outsell Mario (Achieved)
How Much Will MH Rise sell?
My Bet With Metallox