I also researched for 6 months familiarising myself with all contenders and price. I eventually chose the Debussy, Network Bridge and Clock. The Debussy has most of the tech features of the Rossini by way of trickle down and does sound awesome at home. I compared the two in the shop with the same accompanying equipment and there wasn't much to separate them, the Rossini a but fuller perhaps. Then it may have been an expectation of sound that I heard.
Glad you like your Vivaldi. I looked at the price and did a quick double take. If I had the requisites, the Vivaldi would be in my house too.