Should wine or grape juice be used for communion?

Should wine or grape juice be used for communion?: Should wine or grape juice be used for communion? What is more important, the substance itself, or what it symbolizes?

The past

It may be tempting to go back and relive past glories. You are not the same person you were then, nor are the other people involved. There's a reason they call it the past: It's BEHIND YOU. Besides how will you see the path God has laid out ahead of you are always looking back?