Opened 2 bottles of rioja for my little bro's b-day last night:
Marques de caceres reserva 1995 (WS 87)
COto De Imaz Grand reserva 1995 (WS 86)
The Marques was fantastic, but the Coto was disapointing. WS suggested "drink now" on the Coto in 2003, and through 2006 on the Marques.
My question is, How do can you tell if a mature bottle is past its prime, or if it was just not good wine to begin with? What charecteristics suggest that a wine is on the decline?