The Christmas Tree Debate: Real or Artifical?

I've debated with friends about which is more eco-friendly - an artificial Christmas tree or a real one. Where do you stand on this issue?

I imagine a potted tree would be ideal. Second to that, I tend to think a real tree would be greener than an artificial one, and here's why:

• According to the National Christmas Tree Association (NCTA) the vast majority of Christmas trees are grown on farms. For every tree that is harvested, 1 to 3 are planted in its place.
  
• Real Christmas trees are biodegradable. After the holiday, you can compost your tree or click HERE for information about recycling. Christmas trees can be turned into mulch. They can also be used whole for a variety of purposes, including erosion prevention.
• On the other hand, artificial trees are not biodegradable. Even though they may be used for many years, they will eventually end up in a landfill. They are made from toxic materials that could contaminate your living space as well as the earth after it is thrown away.
  

By the way, the National Christmas Tree Association has an interesting article called the 10 Biggest Myths About Christmas Trees.