I have a dell inspiron 15 3542 model & im using it more than a 6 month.
my laptop works great in normal working as well as in some high graphic games like fifa & CS GO with built innvdia geforce graphic card and heavy simulating software like MATLAB
I have only one problem with my laptop is that dell is using sound max speakers. its sound is low that I cant hear anything using it but they give me a Bluetooth speaker which works great
The best things of laptop is its touch pad. dell mostly provides synaptic touch pad with some good fetchers .
So over all I like dell laptop.