Pressure cookers are an essentiall need these days.Our kitchen is incomplete without it.So chosing a good one is very essential also because of safety reasons.First of all go for renouned brands like prestige, hawkins, etc.You must look for ISI mark which is a must in electrical appliances.It guarantees safety.Then you must choose the one according to your need.For instance if you want to cook pulses for a family of five then you should go for a three litre capacity pressure cooker. or when you wish to cook pulao or biryani for many people you would need a pressure cooker with five litre capacity.You should also check for god quality rubbertube and proper whisle according to size of pressure cooker.I hpoe my tips were useful to the reader.Thanks for reading.