OK, new thread:
What is the difference between "Reserve," and a regular bottling? In the US, it means nothing. That said, some wineries do a "Reserve" bottling that denotes a special selection from the vineyard, the aging room, or some other area that they believe sets that particular wine apart from their regular release. Unfortunately, many vintners/marketers use the term to designate anything that they want, i.e. Kendall-Jackson's "Vintner's Reserve," is their regular release. They do a "Grand Reserve," which they claim designates something special.
Now, in other countries, like Spain, and Italy, for instance, "Reserva," " Riserva" do mean something - usually that the wines have been aged longer in wood than the "regular" version of a similar wine. Usually, "better" wines are chosen to become Reserva or Riserva.
Don't totally discount "Reserve," and similar designations in the US, as some winemakers DO use these, or similar terms, to designate their better bottling.
Hunt