Alas, in keeping with our collective destiny of unappeasability in re: packaging, I must note that I'm not thrilled by the latest bottles. I'm glad to have the foil seals gone, and the perforations under the lid have been nice and easy to break with the thumb method. But I notice it now takes much more torque to unscrew the lid. Because the plastic wrapping fits somewhat loosely over the lid -- maybe looser than before? -- I now find it impossible to grip the lid sufficiently tightly to twist it off unless I remove the plastic wrap from the lid entirely, as opposed to simply breaking the perforations underneath it.
It's not a big deal at all, but I did like it better when I could simply break the perforations and twist off the lid without having to remove any wrapping. That took fewer steps, and did not produce any loose material that must be immediately disposed of (apart from the foil seal). Not yet sure whether I find this better or worse than the foil seal. Probably overall still an improvement. Just not ideal.
Unfortunately, maybe it's just not feasible to have packaging that (1) can be unsealed quickly and easily with a minimum of steps, (2) does not shed any packaging material in the unsealing process that must be immediately disposed of or else carried around, and (3) reliably prevents the growth of mold. Again, this isn't a big deal as far as I'm concerned; just a little nitpick.