For me it is all about comfort vs rolling resistance. I rode
35-622 panaracer sk slick
38-622 panaracer comet
45-622 schwalbe G one Bite
38-622 vitoria tereno mix
50-584 conti cross king
50-584 conti race king
52-584 vitoria mezcal
52-584 vittria barzo
the best for me is 50-584 raceking because @ 20-23psi, it is the tyre with the lowest rolling resistance and is very supple. It is fast on tarmac, faster on gravels and is OK in mud