This is my second Presto pressure cooker. My first was given to me second hand in 1970 and it has worked just fine all these years but I decided I wanted one a little bigger (my old one is a 6 qt.). I purchased an 8 qt. and have been very pleased by its performance and the fact that it is lighter than my old one and is very easy to clean.  The instructions included were easy to follow and the only installing I had to do was putting the handle on.