Get the Presto. They're all the same. It's a simple design, a pot and lid. I've been using them for 20 years and the expensive ones are no better than the Presto- Only an amateur cook would believe different. The Prestos cook just as good and just as fast as the Rikons. My kitchen is filled with the best and most expensive equipment money can buy, but when it comes to pressure cookers, it's not like other cookware where you "get what you pay for."  They're all the same (although I don't recommend the electric ones as they have a tendency to break down). Save your money for the good espresso maker... don't waste it on expensive pressure cookers. Get the Presto.