I had a Presto 6QT pressure cooker that was stolen by a Bimbo.  I got an 8QT foreign made pressure cooker but I liked the Presto, missed it and decided to get another one.  The old one was American made and the Stainless Steel at the top seemed to be a bit heavier.  This one  has a heavier bottom due to the sandwiched in clad aluminum.  The one Drawback is that it is Made in Communist China.  It seems to be pretty stout overall.  I can't detect any difference in the way that it cooks.