I definitely the Gigabyte P35W v2. It's as light (5.07 lbs) and thin (0.83") as a Macbook Pro Retina, but can carry 4 hard drives inside! My model from last year has a 2GB nVidia GTX 765M + Haswell i7, but this year's model is pretty damn insane with its intel i7-4700HQ CPU and a whopping 6GB nVidia GTX 870M graphics card. Now that's a beast!
On top of that, unlike other thin laptops, this one can carry up to FOUR hard drives!
Finally, it has a miniDisplayPort to output to a 4K monitor.
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