Im currently on a SAR team in Idaho and most of our diving is black water, go figure, and swift current rivers. I am at this time diving a Zeagle Ranger bc. It's a bit small so I am getting another bc in a large rather than a medium. Currently I am debating on the Ranger LTD and the 911 or even the SAR bcd. Does anyone have any thoughts or experience using these? My Ranger has held up well but if there is something better I would love some thoughts.