Ozwald wrote: I'd go with the ball lock over the pin lock. They're more readily available
Seem to recall someone on a show recently (JP and Tasty?) saying that ball lock supplies are getting harder to find, as more people prefer them over pin, and pin are what's more readily available these days. Even if that's true, it's gonna vary with location though, and as you said, easy to get adapters to convert the posts to ball. Have also heard of guys who will use ball for most of their beers, and use pin for sours or root beer that they don't want to cross the streams on...