I'll need to try this, side by side as you have -
I'm not sure I'm convinced that Rose 31 is worth the money, considering 100ml of Paestum Rose can be had for less than $150 Canadian (including shipping and tax) and Agent Provocateur is about the same or less per ml.
I really would love to try Le Labo's Vanille 44, but the price is absolutely unconscionable.
Just to update - Rose 31 in its dry-down leaves this sweet patchouli (at least I think that's what it is) that I've found a bit irritating.
Paestum Rose is like red wine and dark roses. I have yet to try L'Artisan VdR, but PR at the moment is what I would choose over Rose 31 - though R31 is slightly easier to wear.