Difference between YSL Libre and Zara Golden Decade?

I’ve started liking YSL Libre more and more and I can’t get it out of my head and wishlist.

It’s quite expensive for something that I don’t need because I already have 10 other designer perfumes. But I still need it lol even if it’s not my dreamy scent (but I still like it a lot). 🥲

I’ve also smelled Zara Golden Decade and it smells very similar. So what are the main differences besides longevity? Should I rather get the Zara dupe?