I don't think that audax riders in general particularly favour one pedal system over another
I use MTB style shimano SPDS. All my bikes have M540 pedals
One time I was doing the "Gospel Pass" 150km audax ride. I believe it was February. Anyway, it was a nice day and most of the roads were fine. Until Hay Buff at the top of the actual Gospel pass. I was following a young M+F couple on his n hers racing bikes. First the road was a bit slushy with snow, then it was snow, then it was unridably deep snow, then it was 3 foot deep drifts. Of course we continued and I carried and dragged my bike 3 or 4 miles over the top. The couple remained just a bit ahead and when I got to the ridable down side of the pass they were clearly having trouble. "These cleats were new last week" wailed one of them. Walking a few miles over snow and mud had worn the brand new plastic cleat so much it no longer wanted to clip in.
I've heard audax people saying Frogs, Time ATAC, Shimano SL etc etc are "best" for audax but really it doesn't make much difference, whatever works for you
I use MTB style shimano SPDS. All my bikes have M540 pedals
One time I was doing the "Gospel Pass" 150km audax ride. I believe it was February. Anyway, it was a nice day and most of the roads were fine. Until Hay Buff at the top of the actual Gospel pass. I was following a young M+F couple on his n hers racing bikes. First the road was a bit slushy with snow, then it was snow, then it was unridably deep snow, then it was 3 foot deep drifts. Of course we continued and I carried and dragged my bike 3 or 4 miles over the top. The couple remained just a bit ahead and when I got to the ridable down side of the pass they were clearly having trouble. "These cleats were new last week" wailed one of them. Walking a few miles over snow and mud had worn the brand new plastic cleat so much it no longer wanted to clip in.
I've heard audax people saying Frogs, Time ATAC, Shimano SL etc etc are "best" for audax but really it doesn't make much difference, whatever works for you