Do you want more bling? If so, get the Chopard. The markers don't stand out as much on the Rolex. Both are great choices. The Chopard floating diamonds are beautiful and stand out a lot because they are big and float.
Chopard, no question! It is more unique, more fun, and more feminine, IMHO. I have three Chopard watches (my SO has more than a dozen) and my latest acquisition is a Happy Sport XL with five large floating diamonds and big diamonds around the bezel. Sky blue MOP face and sky blue croc band. Beautiful!!