Some people install schrader valves (like on the tires for your car) into the cap of the soda bottle. There should be threads here if interested in that alternative.
My carbonater doesn't leak out of the poppet but I can't leave the QD on it because it does leak past the external o-ring. For $14, that stinks.
Early brewers were primarily women, mostly because it was deemed a woman's job. Mesopotamian men, of some 3,800 years ago, were obviously complete assclowns and had yet to realize the pleasure of brewing beer.
- Beer Advocate