There are two fundamentally different kinds og J Winter cases (not counting the greenline, which I would not recommend based on hearsay). The old black cases are really sturdy but the neck doesn't fit. No experience with the new fiberglass ones, but you have Rennie's take on those. I suspect Milandro may refer to the former kind, which were made to fit Keilwerth. OK, Milo, come on. Your third chance in a week to flame me (not that it affects someone with my resilience).