This is such a biased review, I'm not sure it can be trusted 
I'm also a big fan of i3, I even managed to get it running with Zorin OS Lite!
I still have to try other options like Openbox but this is quite comfortable for me now that I've gotten used to how it works. Another ones that I'd like to try some time is dwm or awesomewm to make it easier to configure. Not sure how well they'd work with XFCE though...