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If you want tilling, i3 is a good start but if you want more config options many people migrate to awesome/qtile/dwmn/bspwm or even xmonad if you dare tackle haskell, or SWAY is i3 for wayland, but herb* it's gonna be a short experiment unless you become a hardcore fan. I tested many wm's but always came back to Openbox, it's a classic with floating windows, I like to be able to control my windows manually and OB might be the most complete floating wm. After OB if I'm in the mood for some tilling, I use DKwm, this is a gem, not many know about it but it's way better than dwm, bspwm or xmonad...

Wow, thanks so much! Regarding window managers, I still have a lot to learn :-)