Depends on how your data is structured and how concerned you are with security.
Use User Specific Columns if a multiple users are updating the same row, but you want the values to be unique to each user.
Use Row Owners if each user is writing their own separate rows, but you want to guarantee security so they can you see their own rows. Requires a column with the signed in user’s email.
Use Filters if data security is not a concern and you simply want to only display rows for a particular user. Requires a column with the signed in user’s email.