Well if we take a look it has a balance approach to performance, battery life, and portability, with a great display upgrade as a bonus offering.
The specification of DELL Laptop XPS 15(L502x)Sany Bridge Intel Core i7 2nd Gen 2630QM(2.00 GHz) 6 GB Memory 640GB HDD NVIDIA GeForce GT 525M 15.6" 2.0MP HD webcam Windows 7 Professional 64-bit is very good.
The model is worth buying because considering of its price perhaps you can not get all those important features in less than$800. Also it comes with 2.1 JBL spreaker which is a great addition.
But some cons are it does not have an eye catching design as mac. Battery backup is not so good although. It is little bit heavy and having a heating issue because of its fan. Less USB slots.
I have already used this laptop, I can highly recommend this product to those guys who is looking to play music, movies, games or to work some light photo editing software to have a fast computer.