I am delighted with the 6 quart Presto pressure cooker that I recently purchased from Amazon!  We barbequed some ribs in it the first day it arrived and they were delicious.  The usage directions were clear and easy to follow.  True to my expectations the meat just fell off the rib bones and the sauce flavor thoroughly permeated into the ribs as I expected.  This aluminum pressure cooker is durable and due to being constructed of aluminum the heat is readily conducted into the cooking chamber rather than being made of stainless steel which takes a longer time to heat.  I would definitely recommend this Presto pressure cooker to anyone considering the world of pressure cooking as a great introductory appliance and thanks to Amazon the delivery was prompt and the price was right.