Now we need a comparison article about fff, ranger, and nnn. I chose ranger, but quite arbitrarily at the time. I tried nnn, but my fingers kept being used to ranger.
nnn has the worst learning curve, but at least the number of commands is brief and all fit on the one help page. I was wishy-washy on it until the selection improvements last year, but now I reach for it about half the time I do anything file/dir related - even the short things, and 100% for anything batch-related.