aluminum or plastic?

i bought my first SIGG bottle about two years ago in an attempt to be more "green".  you know, to do my part to cut down on plastic water bottle consumption.  however, i now have a new reason to love these bottles.  it has just recently come to my attention there's  another, greater benefit of using a SIGG aluminum bottle, or any other BPA-free bottle for that matter.



the hazardous bisphenol A, or BPA, is used primarily to make plastic, and has been linked to negative health effects such as obesity, neurological issues, and cancer.  BPA can leach into the water you drink when your plastic water bottle is exposed to heat or to harsh detergents and hot water.  so if you leave a plastic water bottle in your car on a hot summer day, do not drink out of it.  if you wash a water bottle on the lower rack of your dishwasher, do not drink out of it.  capeesh?

when my SIGG bottle that had been with me just about every day for two years mysteriously "vanished" (it has a unique dent on the side, and if i see you drinking out of it there will be severe consequences), i knew i had to suck it up and buy a new one.  although these bottles are a bit pricey at about $20 a pop, you're doing your part to help out the environment, protecting yourself against BPA exposure, and in the long run saving a lot of money that would have been spent on those ridiculously heavy cases of water.  plus, they're extremely durable, and come in a ton of different colors and designs.  i chose the plain white because i liked the sleekness and simplicity of it.

so let me ask again, aluminum or plastic?