If you are looking for a nice place for a starter cocktail hour, go to R2L in Liberty Place towers.
Last time I was there they were pouring anything on the wine menu in half bottle decanters, think this is still the case -- nice list too.
Food is good, if a bit pricey.
12th and Chestnut has the biggest selection in town, Garces Trading has a wine store in it, first of its kind. 99% European wine, only cold room, I am sure you could find something interesting there.
AND if you like burgers, Whiskey Village off Rittenhouse. Bar none, best burger ever.