I can't say which one is the most pure of the vetiver scents. I've never
smelled the actual plant. I will say, though, that Vetiver Extraordinaire
does live up to its name. It has a strong earthy feel, combined with
an ozonic accord that fits the fragrance very well. It is superb.
Those who have smelled it claim that Route du Vetiver is the strongest,
most straight-ahead vetiver out there. That's probably your best bet
for pure vetiver, but don't neglect Vetiver Extraordinaire. I do also
think that Etro Vetiver is very good, but it is in Eau de Cologne strength.
VE lasts all day on me.