Check out pressure cooker reviews for various types. New safety valves and regulators make them safer and new pressure release methods make them faster. You can select them for safe and fast cooking.
Cuisinart pressure cookers work have nice safety valves and natural release methods. This allows to manage pressure settings in a better way. http://www.pressurecookerroyal.com/cuisinart-electric-pressure-cooker-review/
The stovetop pressure cookers work on releasing steam from water and thus increasing pressure in the container. The boiling point is reduced...