Which gaming laptop is best today?

Alienware 18 can always be configured with the top components available.
Also check Falcon Northwest DRX.

You should go with Lenovo ideapad z series laptop, Actually I'm using Lenovo ideapad z570 laptop from last 3 years. Its working very fine. This laptop is very cheap and much faster in compare of others. You can see the specification of this laptop. And this will fulfill your recuriement…

SPECIFICATIONS:
- Up to 2nd generation Intel® Core™ i5 processor with Intel® Turbo Boost Technology 2.0
- Up to Genuine Windows® 7 Home Premium
- Lenovo Enhanced Experience 2.0 for Windows® 7 with RapidBoot technology - delivers faster start-up & shutdown and optimized multimedia capabilities
- 15.6" Backlit LED HD display (1366x768), 16:9 widescreen
- Up to NVIDIA® GeForce® GT540M 2GB graphics with DirectX® 11
- Up to 8GB DDR3 memory, up to 750GB HDD storage
- Integrated Bluetooth®1, WiMax2 & high-speed 802.11n Wi-Fi
- Integrated DVD reader/writer & Blu-ray Disc™1 drive
- USB2.0, eSATA connectors & 5in1 card-reader
- Integrated 0.3/2M (720p HD1) webcam