@MrFunex so how is your 6820 1080 refurb?
Sorry! Been too busy using it!
In a nutshell; it's a wonderful machine. I've been playing GTA5 and Just Cause 3, with everything maxed out at 1440p; it's been superb and always manages 60-80fps or more. It's a very fast machine! I've got the i7-6820HK CPU, GTX1080 8Gb and 32Gb RAM.
People often ask about temperatures on these machines - I've seen a max of 85C CPU and about 68C GPU. I place a book under mine to raise it an inch off the table/floor to aid airflow. It kind of needs it.
I've played about with the BIOS supplied overclocks (from standard 3.6GHz to 3.9, 4.0 and 4.1). It's perfectly stable at those speeds, but temperatures rise by around 10C on the highest speed setting.
I've done a few benchmarks - just 3DMark and Unigine Valley - I couldn't think of any others.
Standard out of the box (receive laptop in post, plug in, switch on and run...) 3DMark FireStrike score was 14740, rising to 16410 with the 4.1GHz OC.
The M.2 SSD is very fast indeed and mine came with a 1Tb 7200rpm drive too.
I have the 1440p 120Hz GSync screen - it's excellent. Nice and sharp, colours appear vivid and no banding or other issues that some report.
It's built like a tank. It weighs a lot and would probably dent the floor rather than break the laptop if it were ever dropped! Battery life is about 3hrs from the 99Wh battery (about 8hrs if you don't spec the 120Hz screen), but I only really use it plugged in.
As for the reason it was discounted - I found the scratch/dent. It's a chip, about 1.5mm across on the right side of the lid. Hardly noticeable!
I'm extremely happy. Just about to buy an Oculus Rift to really push it!