Than leading plastic-encased brands.
I recently lost my Soma water bottle, so thought I'd take this opportunity to remind people about plastics' pernicious leaching propensities.
Plastic may or may not leach toxic chemicals into our water bottles, at levels that may or may not have long term impacts on our endocrine system, that may or may not affect our reproductive system.
So we may or may not want to play it safe, by avoiding plastic when possible.
On the cycling front, I've searched for an eco-friendly, non-plastic, lightweight alternative for some time now. The front runners thus far:
*My lovely new SIGG bottle. This I use for commuting. For distance/sport cycling, doesn't quite meet most cyclists' featherweight criteria;
*The Soma Bottle. Though plastic, at least a better alternative for cyclists, a special non-leaching plastic that won't make your water taste like a chemical reduction sauce;
*That light-weight, bio-plastic bottle that won't disintegrate after a few rides......damn, isn't out there yet.
When in doubt, avoid the plastic altogether.