If you still like L'Eau d'Issey, you should try an M&S one which is (to me) almost identical. I think it's called Aqua (Autograph range) now - it used to be called Isis but they changed the name (can't think why!!). I had a bottle about 15 years ago and it even had a similar shape to the Issey Miyake one.
M&s Aqua is currently a star buy online, £15 for five piece gift set.