halocline
Contributor
I'm not sure what you're disagreeing with. There's no question that the MK17 is more freeze resistant than the MK25; that's what it was designed for. That doesn't mean that MK25s always freeze in cold water. If you read my post, I clearly say that thousands of cold water dives have been made with the MK25 for years. There's also no question that both 1st stages supply plenty of air at a very consistent IP, which means that their breathing characteristics are essentially identical in real world situations.
I also like SP balanced piston 1sts, I have quite a few, although they're all older (MK5/10/1520). I'm not trying to tell the OP that the MK17 is "better" than the MK25. I only object to the false statements that the MK25 "breathes better" and that the MK17 "breathes drier" in fact I don't even know what that means.
