I have bought Inspiron 5521 laptop in Dec 2014 from local dell dealer.As far as quality of the products is concerned dell proves to be best.Though enough features are availble but compared to other brands as lenovo prices are high but till date I am using it I have never faced problem regarding hardware or battery issue.Being a valued brand and world level existence it is very reliable brand and model.Dell has 24x7 service facility available through call, chat and also through email.It has also facility available on website for automatically checking and updating your device basic drivers.