2 reasons I dint mention Safari type snork's. First, before I flogged me Deepender I considered keeping me safari snork to put on me Series. I sized it up against me III & it just rilly din't look right (ok, so that's jest personal taste!).
Second, there's been quite a few times I am totally sure I would have torn off/severly damaged a Safari type snork & I've met several people who have done just that. Part of the beauty of a III is that is totally square with no sticky out bits. If you can get the front end through something you know there's nothing else to snag & it's going to fit...........well, cept' yer mirrors & they just generally fold back with a 'clunk' without busting.............most of the time!