Which Italian restaurant shuld I pick in Rittenhouse Sq? Ernesto's 1521, La Viola, Porcini, or Casta Diva?

My boyfriend and I will be staying in Rittenhouse Square in Philadelphia this weekend. I can't decide on which restaurant after reading so many reviews on these select ones. Please advise in telling me which one we should definitely eat at. The key things are good food, byob, and romantic. Thanks!Which Italian restaurant shuld I pick in Rittenhouse Sq? Ernesto's 1521, La Viola, Porcini, or Casta Diva?
def not casta diva, nothing special. la viola is awesome but kinda cramped- i always go back there though. never been to porcini but heard it's only ok. never been to ernesto's. there is also a place at 17th and lombard called bistro la baia which is BYO and yummy. pumpkin at 17th and south is very romantic and BYO but pricer than the other places. i also love the new melograno at 20ish and sansom.

so anyway, la viola is way cheap and great food. there is also their sister restaurant right across the street called la viola ouest which you could try.

rumor touch