I'd say the Danhov is more romantic feeling and a bit more floral. It has a soft, flowing feeling. The Legato is clean and contemporary with some flair and the felicity adds some curves to the design -- it's still feminine without any fuss. This would suit someone fashion-forward or with edgy tastes as well. If she is jeans and t-shirt type of gal, then think about how she decorates. In the end, they are both lovely and the diamond is gonna be amazing. You can't go wrong here!
Decided!! Legato sleek with felicity head. Going to make payment today.