Excellent choice indeed. Riedel glasswork for wine is the best you can really get. The most professional obviously. (I'm not talking about expensive glasswork by designers such as Versace, they are more state of the art).
Old wines should be decanted, trully. Not always though, sometimes it's enough to leave them be for a few minutes in the glass and then take it. Sometimes, you need to open a bottle half an hour before consuming and live it that way. And often you do need to decant. Temperatures vary, older wines tend to be better at higher temperatures, 18 degrees Celcius. Younger are better at 14-16 degrees. Whites are best at 6-8 degrees. Sometimes you decant for 30 minutes, sometimes for an hour or two and sometimes for two days! <img src="/images/graemlins/smile.gif" alt="" /> As for the temperature problem while decanting ... you can fight it with either chilling the decanter prior to decanting, so it will hold the temperature for a while, or you can put this special medical thingie (don't know how it is cold), it contains some sort of gelly substance, you put it in freezer and then apply on a body part, when need. So, you put it under the decanter. I've done it many times, and it works just fine. Temperature is crucial, I always measure it, since wine often is worthless at low temperatures (or too high). Any decanting experience you can share?