Longevity was also a bit of an issue for me, and apparently many others.
However, the current version dispels all those concerns - It's still got the signature metallic freshness from the lavender/geranium/rosemary combo, but it's perfectly balanced by moss, woods and amber in the base to prevent it feeling harsh.
Second, what they did accomplish with this reformulation is in my opinion an improvement over the vintage.
I've owned every iteration of this and the newest is the smoothest, slightly sweeter with less harshness/dryness than the others and easily the most balanced.
Oddly enough for me it is by far my most complimented fragrance (and I do own fragrances like Blue De Chanel, ADG Profumo, D&G The One, YSL La Nuit, etc.).
I have also received crazy comments from girls like 'I could still smell you on me the next day'.
I have rarely worn this without receiving a positive comment.
After using the new batch u must say the projection is a semi beast. Don’t get me wrong iso e super is one of my favorite scents out there and I love how complex it is and the variation there is between different batches made by different companies.
Chanel takes this very seriously and it shows (smells).
Still easily lasts all day with a couple sprays with moderate-to-strong sillage.
I think its distinct metallic feel is what makes it so unique, masculine and classy.
As far as I know the composition has been reformulated in the past and all I can say in this regard is I have the reformulated version and it smells very contemporary.
Thought this fragrance was owed a couple clarifications, seeing many of the comments since the recent reformulation...