I agree with the first answer. Vega Sicilia (Ribera del Duero region), if you want to impress and you have the Gold Card. Otherwise, I would go with a Muga. Reserva/Grand Reserva. 1994 and 1995 were the last Excellent years in the Rioja region, if I´m not mistaken. (1999 and 1996 for R del D.)