Edit: Can the downvoter explain their reason?
My personal favorite is the LXDE / Lubuntu 16.04 setup.
All my subjective opinion, of course:
- Sits in the sweet spot for bare bones distro vs batteries included.
- Without decorations, I have essentially borderless applications, that I can quickly toggle the titlebars etc.
- Kept sane keyboard shortcuts and did not remove them for some arbitrary reasons. Here's a random nitpick, why do some interfaces no longer allow you to press a single letter on the keyboard to launch an option from a menu, example: An option from the list of options in the File menu?
- Very fast, allows a great battery life, all of ubuntu packages and ubuntu community support/troubleshooting, very easy to customize if you need to.
I love it because it is an OS that stays out of my way, has a sane setup out of the box and looks awesome with the borderless windows.
It is perfect in almost every way! I'm worried about their plans to switch to LXQt. It's almost like how Ubuntu 10.10 was IMHO, the pinnacle of perfection, sane choices etc, and then they decide to start all over again.