I don't know how other people manage to keep their lambskin Chanel as new, I don't baby any of my Chanel but I am very careful when take them out so I don't put them on rough surface or avoid to bump into people etc. somehow I just got my lambskin rec mini black with pale gold hw this Jan/Feb(can't remember exactly), I only worn it a few times per week and not even a whole day from morning to night each time, the edge of the back pocket already shown wear off(I found it just two months after I purchased), which is super annoying to me, so I had to reduce usage amount to minimize the wears getting worse and everywhere else. But I still love it. If I have to choose from your two options, I would def go for YSL one, BUT if you are open for other option then I highly suggest you to get a rec mini in carviar, since you have two caviar, you know how sturdy they are. That's what I am going to do for my next Chanel purchase.