Do yourself a favour and buy that Dell. Both notebooks are fine but based upon different design architecture. Specs are the same almost except for the processor. If you want to do some very heavy work and heat generation/fan noise dont bother you then go for Sony. But if you intend going for a futuristic notebook then select Dell with sufficient power performance and wireless connectivity. Its quieter and lighter as well. Screens of both notebooks are good for a rich visual experience. But do coonsider the place from where you intend to buy them in terms of warranty and backup support.