I just received my 4-qt stainless cooker,  and couldn't be more pleased.  My mother and grandmothers all usded Presto pressure cookers, so I grew up knowing their products really stand the test of time.  My mother in law also had several Presto cookers that she used frequently.  However the STAINLESS STEEL cookers are far superior to the aluminum cookers of yesteryear.  Well worth the extra money.  With the thick bottom plate,  it won't warp,  and the heat is more evenly distributed.  I have been a fan of pressure cooking for many years, but as my household shrank,  I found the need for one smaller than my 8-qt for everyday use.  This is perfect, and very attractive too.  I look forward to years of reliable service.