MSI gt70 dominator pro
i7 4800/4910 processor, gtx 880m 8gb gpu, 24/32gb ram, 128/256/378gb ssd in raid 0, 1tb hhd, bluray burner
Asus g750
i7 4700 processor, gtx 880m 4gb, 24/32gb ram, 256/512gb ssd raid 0, 1tb hhd, bluray reader/burner
Alienware 18
4700/4800, 16/24gb ram, gtx 870m/880m sli, 256gb ssd, 1tb hhd, dvd burner
MSI best bang for buck, asus best quality and just a smidge more than msi (winner), and alienware just a beast but will max any budget you throw at it 16lbs and a pure desktop replacement