We have used Pressure Cookers (PC) for more than 40 years.  Out current one (Maitres 6 qt aluminum) was made in 1989 and reliable parts are no longer economically available. The cost of a new Presto 6qt aluminum PC is $30 while the cost of parts for the Maitres was $15-20. We chose to get the Presto.  The lid is easy to attach. We had bought a Presto 8-Quart Stainless Steel Pressure Cooker, but the lid is too difficult for the lady of the house to attach, so she wouldn't use it.  The Presto 6-Quart Aluminum Pressure Cooker is so simple to use that she has no problems.  It's taller than the Maitres 6 qt aluminum and not as wide. Assembly of the handles is simple and needs a Phillis #2 screw driver.  Check the screw tightness after several uses, as metal expansion-contraction cycles will tend to loosen them initially. Good product.