This pressure cooker works well, once you get used to it.  it takes a lot of heat to get the weight rocking, and then you need to figure out how low to turn down the heat to just keep it rocking gently, as there is no gauge.  The small hard rubber pressure relief valve can fall out a bit too easily, but that's fairly minor.  I like the fact that you cannot open the lid until the pressure inside is safe to do so.