I'm not loving that success rate, but if you've still only had those green ones break that's more encouraging. They do seem thinner. Thanks. And regardless of what I go with I'll definitely bag each bottle in case of breaks.
You will like the boxes. They are very nifty. I have the 3-bottle boxes and when I sent the 12BOC beers I just taped two of them together. Yea, don't use SNPA bottles for shipping (I think that is what I used). Dogfish bottles are pretty stout, I think I remember.