Someone please help me choose between 2 laptops!?

Well, let's see- the XPS has a better processor (yes the clock speed is lower, but it's a quad core. The Lenovo will be better for some scientific calculations, but not for gaming). It has a better screen, a better graphics card, a bigger hard drive, and a blu-ray drive. Overall it's a much better computer. That being said, it's bigger and it will have worse battery life. So if you care about portabillity, get the Lenovo. If you're only focused on gaming, get the Dell.