depends on your needs.. best gaming laptops out there right now are the XPS2, and the Sager 9880. Performance will be simillar as far as gaming goes, probably leaning towards the XPS2, but the Sager will do better in CPU aps.. (encoding, decoding, Photoshop ect ect ect). Over all performance.. the Sager is somewhat superior(hate to admit it.. I have an XPS2) because it does better in more things, but it comes at an expense of weight, size, battery life, and heat. It really depends on your needs.. for pure gaming the XPS2 is better though.
btw.. ABS/AW/Sager and many others use the same Clevo based laptop so don't listen to people who tell you to go with one or an other for no reason.. you'll just end up paying for brand name.. not performance.