I have played FFI, FFII, FFVI, FFVII, FFVIII, FFIX and FFX.
FFI: Played once, finished once. (PS1)
FFII: Played twice, finished once. (PS1)
FFVI: Played many times, finished twice. (PS1)
FFVII: Played three times, finished three times.
FFVIII: Played three times, finished many times
FFIX: Played many times, finished many times
FFX: Played once, finished once.
And now i'm busy with FFIII