You can't go wrong with any of those choices, they are all beautiful. I voted for the Chanel WOC! I was in Paris a couple of weeks ago, and they had a great selection of WOCs (which are always so hard to find in the US). The quilted classic WOC was still priced at 1260 euros (not sure if this is still the case, but I was there after the price increase). This is a significant savings over the current US price. I was also considering a Cartier piece and did some price comparisons, and for Cartier, the US and Paris prices were almost the same. So, if you plan to get both at some point, you may want to consider this!
Either way, what a fabulous souvenir from your trip!
Either way, what a fabulous souvenir from your trip!