I have heard that the 7' hose has no place in open water but for me it does. The seven foot hose is comfortable without the need for an angled fitting at the reg and when diving with my wife we sometimes are able to extend our dive by a few minutes by sharing air if one of us has breathed down our tanks faster than the other for some reason. As a result, sharing air for us has become second nature without the need for drills. Air? Sure, here. The seven foot hose makes sharing while continuing the dive easier. This is something that we do at the midpoint in the dive, not at the end to squeeze out the last possible minute of dive time. The variables among divers and dive sites are too broad for a one size fits all philosophy to what is appropriate gear.