Compared to other brands these seem to leach very little plastic flavor into water even after long hot days on the trail.I have never had one leak, though a new bite valve was needed as the frist one had leaks where my teeth had bitten through it after over five years of regular use!A touch disappointed that the 2l is simply slimmer but just as tall as the 3l.Overall great water bag, evenif the handle part system is pretty poinntless and ended up on the trash.