as for the Mistrel. I wanted one. Bad. The price was a kick to the gut, but the idea of bubbles behind the head was cool. Then I read up on double hose regs. ITs not all peaches and cream. They breath different than standard regs and if I remember it right can be bad news if they flood. I think I read that there is no back flow at the mouthpeace. If it floods and you breath in, you get water. I may have mistaken that bit of info with rebreather stuff, so look it up for yourself to be sure. The Mistrel is a good reg, just make sure you read up about it really good both before and after you buy one. With proper training and knowledge It can be cool way to dive. awww heck, cant we just hold our breath anyway...........