Guerlain Vetiver is timeless. It is still THE "Benchmark" from which all other vetivers are measured. I, personally, believe that it is a masterpiece (or near masterpiece) in virtually all bottlings as I have Vintage EdC and EdT bottlings.
It is a mature
and classic scent - but will never smell ancient.
The current juice is actually wonderful, as is the (still readily available) 2000 formulation in the ribbed bottle.
Get the latest formulation if you want a very green, fresh and more linear (in a good way) vetiver. The spotlight is clearly on the root - nice bergamot on top, a dash of spices in the heart and only a light touch of Tonka Bean and a light pinch of tobacco. On the other hand, the 2000 juice has a blast of zingy lemon, bergamot and coriander. Even a nice neroli note is in here (adding a nice peppery, orange note - a spicy citric tinge that I adore). The base is much deeper with rich and smoky tobacco and heavier use of Tonka Bean. You smell vetiver throughout, but there is a lot more notes in the composition - therefore, less linear. I love both...
And, that is not even approaching my adoration of the Vintage juice from the decades before.
Guerlain Vetiver will definitely be considered an "ancient relic of taste & class" in a few hundred years...and people will probably still be wearing it in their spacesuits.