FrontRow....
I went to the original one in the Village (NYC) many times. My problem with Italian food in Vegas is that I have never had as good a meal as back East....NYC, Philly, Jersey, Staten Island....places that the "boys" run.
Il Mulino in CP is excellent....I would, however, say that the Osso Buco at Mimmo Ferraros is superior. I have not been to their new/expanded restaurant, I loved the old one...lots of "Sinatra charm" to it.
If you are a local and like superb pasta, then go to The Pasta Shop located in a rundown strip mall on the corner of Eastern and Tropicana. These guys made the pasta for the top Strip restaurants for years, then started a small restaurant. The dishes are decent, not great, but the pasta is the best in Vegas.