I first discovered i3 improved tiling window manager a few years ago. It keeps pulling me to it because of :
- geeky factor
- structured thinking by way of desktops
- shortcut lover
- terminal lover
- LOWEST CPU consumption ever
This is I3 installed on Linux mint 17.3 cinnamon with extra i3-gaps, latest kernel, latest cinnamon, Sardi Mono Numix icons and wallpapers.
Dual screens are actually ideal for i3 as you can see here.
All information how to install has been posted on this site :