I have a Dell Inspiron 14z (mid-2013). 320GB HDD + 32GB SSD, 6GB RAM, Intel 2-core hyperthreaded i3. I got it for free when someone didn't want to go through the trouble of fixing it (Windows bootloader had gotten corrupted somehow). It was a case of more money than sense, and their son wanted a Mac anyway, so I gladly said I'd take the "piece of shit".

$12 later to replace the trackpad and I couldn't have asked for a better laptop, other than a few things. All the components work flawlessly with Linux and OpenBSD. I get around 3.5 hours battery life with tlp working its magic. The only thing I hate is the glossy screen so working anywhere slightly sunny is miserable. I don't know who thinks that's a good idea. The keyboard feels a bit too mushy, but I haven't really found _any_ laptop that feels great to type on. But the small form factor, SSD+HDD combo, good CPU, enough space for a good amount of RAM, and works with any *nix I throw on it, it's awesome.