I bought 3 12-packs of these bottles, and I'm quite happy with them.Pros: + Tight seals + Silicone seal design is more aseptic than Grolsch design. + Nice, dark amber glassCons: - Seal is so tight my hands were getting tired after sealing ~30 bottles. I'm in my 30s with relatively good hands/forearms. If you have nerve, joint, or muscle issues, you may want to start with a few of these and see how it goes before ordering too many. - The silicone is a solid piece instead of the typical Grolsch seal. I think this design may seal the bottle better, and definitely removes a place for contaminants to hide, but I worry whether I will find identical replacements when these wear out. I suspect the underlying plastic is compatible with both types, but I have not tested it. - Cap is plastic instead a ceramic, but AFAIK no one makes the ceramic ones any more. Easy enough to replace if it wears out.
