This was my first pressure cooker, and everything has been very easy to figure out and use.  The one aspect that I don't like very much is the odd pressure regulator on the top.  It just sits on top of the hole, using it's weight to keep the pressure in, and it vibrates when the pressure reaches 15 psi.  I feel like it makes it very easy to lose an essential piece of the cooker, and it could be done much better.  It stills works, but it just seems like something that was jury rigged into place.