Don’t use a plugin, unless you want a nice menu. From Vim Documentation: Starting (or :help old):
:ol[dfiles]
Then to open one of the listed files, use: '0, '1, '2, … '9
List the files that have marks stored in the viminfo file.
:bro[wse] ol[dfiles][!]
List file names as with :oldfiles, and then prompt for a number. When the number is valid that file from the list is edited. Use ! to abandon a modified buffer.