Germany, 500€ budget, looking for a decent ARM based laptop or 2-in-1.

• Total budget and country of purchase: Germany, I'd like to stay below 500€.

• Do you prefer a 2 in 1 form factor, good battery life or best specifications for the money? Pick or include any that apply. 2-1 (as in surface like) would be great, but is not necessary. Otherwise, good battery life is fairly important as it will be used on-the-go.

• How important is weight and thinness to you? Not the most important, but lighter is better.

• Which OS do you require? Windows, Mac, Chrome OS, Linux. As long as i can put linux on it, I'll be happy :)

• Do you have a preferred screen size? If indifferent, put N/A. Between 12 and 14 inches would be perfect.

• Are you doing any CAD/video editing/photo editing/gaming? List which programs/games you desire to run. No, just webbrowsing, some light youtube and programming.

• If you're gaming, do you have certain games you want to play? At what settings and FPS do you want? No gaming.

• Any specific requirements such as good keyboard, reliable build quality, touch-screen, finger-print reader, optical drive or good input devices (keyboard/touchpad)? Since I'll type a lot on it, a good keyboard would be quite nice. I'm not a fan of touchscreens on non-2-in-1s tho, and i don't need any other peripherals really.

• Leave any finishing thoughts here that you may feel are necessary and beneficial to the discussion. I'd really like an ARM-based CPU to complement the X86 one in my desktop. This might also help with the cost and battery-life? I'm not sure. I'm open to android devices that I can flash a linux distro on as well as the obvious choices of chromebooks and such.

Edit: I forgot to mention that I'm absolutely open to picking up used devices, too.

Thanks for all the work, y'all are great :D