I am with Blast. I have seen enough contradictory evidence on the nets and in some science circles that I don't buy the BPA hype.

I think in part this was a created to market an old product as new, to reinvent the relevance of an industry. Plastics have been losing market share to Sigg, Kleen Kanteen, et al, and creating the hype that the 'evil' plastics being used are just as 'green' an industry.

Remember there is a clear anti-plastic bent out there. In San Francisco you cannot get plastic bags at grocery stores now, only paper bags. Competitors of Nalgene type bottles will give you study after study of how metals are superior in quality, taste and durability.

We all know that older Nalgene bottles will hold taste, but I can still buy them 4:1 on a Sigg.