Dell is the best brand for laptops and computers because all features of the laptops and computers of dell are too good. Dell XPS 15 L502X is very good laptop. Its Features are too good such as Display, Speakers, speed and design. I bought this laptop in 2014 and now its speed, speakers, display all are okk and no effects was shown at speed. For gaming and for all other purposes it is too good.
So, I suggest you to buy it!