My father is partial to breathable glasses. The breathable glasses, while seemingly ridiculous in theory, actually do work and really help to bring out the bouquet. My dad popped a '99 Charles Krug Reserve cab tonight and using the breathable glasses really did help. Out of the bottle, it was a little too smooth but after sitting for about half an hour in the glass, the wine really started to open up and overall taste just blossomed. What was noticeable was the spicier back end and the hints of black cherry and dark chocolate. It got real big if you know what I mean, just so much more depth than straight out of the bottle.
Riedel glasses are beautiful, my father has a few of the Bordeaux glasses from their Sommeliers line, and they are absolutely stunning but for everyday use? I would want to bring them out. My mom has literally cracked dozens of them, and it gets real expensive real fast. You might want to look into the titanium crystal glasses. They are extremely durable and more resistant to the nasty staining reds can inflict on lead content glasses. They are also really affordable, I believe K&L sells a five or six pack for around $50. The breathable glasses are also pretty reasonable as well.
About decanters, I wouldn't use one unless you plan on downing the whole bottle. While the decanter works really well at opening up the wine and allowing it to breathe, your wine will last only one or two nights max. After that, the wine will begin to flatten out, lose it's bouquet, and start turning into cooking wine. If left in a bottle, and used with an airtight cork and a vacuum pump, wine'll typically last around 4 days before starting to go downhill.
