I've been using Presto Pressure Cookers for over fifty years.  My grandmother taught me how to use one when I was 15 years old.  My 8 quart is still in perfect condition but due to health issues it got difficult for me to handle.  I found a 4 quart on Amazon.  I have used it about twice a week since I got it.  It is perfect.  It is easy to use and to maintain. I rarely write a glowing review of anything but this item is high quality and meets the safety standards. Johnny