I had the same dilemma, but ultimately went with the YSL. I actually got mine in black with silver hardware, which I liked more than the gold. My reasons:
1) Color - It's almost impossible to find a WoC in a classic color without a long waitlist, and for that much money, I couldn't really commit to shelling over for a fashion/trendy color.
2) Price - I actually lucked out and got my YSL for about $150 cheaper because it scanned up at a lower cost, so NM had to honor it. Either way, it's $600 cheaper than the WoC here in the US.
3) Size - I generally like to carry a bit more with me, so with the WOC, my iPhone would've filled the whole space. With the YSL, I still have a little bit of room to throw in a lipstick, compact etc.
1) Color - It's almost impossible to find a WoC in a classic color without a long waitlist, and for that much money, I couldn't really commit to shelling over for a fashion/trendy color.
2) Price - I actually lucked out and got my YSL for about $150 cheaper because it scanned up at a lower cost, so NM had to honor it. Either way, it's $600 cheaper than the WoC here in the US.
3) Size - I generally like to carry a bit more with me, so with the WOC, my iPhone would've filled the whole space. With the YSL, I still have a little bit of room to throw in a lipstick, compact etc.