Hey friends I am using Sony Vaio E Series this really best laptop it has good audio quality. I am using this laptop since 2012 still it working well there is no problem in hardware type and software also all the button of laptop still working good I this is the best laptop for every one. The best thing that I use rarely because good quality of this product is that there is assist button near to power button we easily reset or restart the laptop by external button this is one the best process of this product so I want say that if buy this laptop you could not get any hardware problem and second best thing in this is battery of this laptop still it give 2 hours battery back so don’t thing more this product.