I watched a Wine program on PBS. It was very enlightening and funny.

Basically, the best way to preserve wine is to remove the oxygen.

What's the best way to remove the oxygen? Not by pumping it out and replacing it with something else, but to move the wine to a smaller container such that is full of wine, and very little air.

The wine connoisseur in the PBS program showed how easy it was to save wine in a plastic water bottle. Top off the water bottle, and drink the excess. Far easier, cheaper, and fool proof than using fancy air pumps and other gadgets. The wine displaces the air in the smaller bottle. DONE. Cheap and effective. More effective than expensive containers, argon sprays, or vacuum pumps.