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The ThinkPad E570: Fast Linux Laptop at a Low Price
Update 03/03/17: These are back up as the E575 with AMD instead of Intel cores.
Update 12/09/16: These were so popular they sold out and the shipping was delayed for months. Lol.
I have been using mine for 6 months now it's still great; running Arch linux with tlp gets me 7 hours of battery (on medium brightness). I replaced my hard drive with the Samsung 960 Evo SSD, which I would recommend buying instead of their SSD (the EVO I bought is 250 gigs for 130$ and the thinkpad version is 256 gigs for 230$).
The one quirk I have with this laptop is that the material it's made from is smear attractive.
The back of my laptop is now a smudgy mess. Oh well.
ThinkPads are known to be stable and great for running Linux on. This Cyber weekend, Lenovo has large deals on their laptops, and the E570, a brand new Laptop from Lenovo, is included. At the lowest end configuration, the E570 has the i3 processor, 1366p display, and 4 gigabytes of RAM for $450 (normally $600).
I bought one of these for myself on Friday at the highest end configuration, with the i7 3.5Ghz processor, 16gb of RAM, and a 1080p display for $720 (normally $960). The laptop has a slightly bulky design, but overall, it looks quite nice.
Sadly, Lenovo has still not started shipping laptops with Linux installed, but you can always use your Arch Linux installation disk before booting up Windows.