For solid east coast wine, I actually recommend Virginia. There is some seriously terrible plonk being created most places (avoid anything from Chateau Morisette, for example), but if you’re selective there are a few wineries making incredibly refined bottles (at a price!). In particular, RdV Vineyards’ Friends and Family or Rendezvous are some of my top wines I’ve ever enjoyed - beautifully balanced and perfect for stumping origin-snob friends in a blind tasting.