Originally Posted by flaps22
...I like to leave it in CLB for the extra margin. Ive had, on many occasion, with CRZ selected in turbulence, where the speed as dropped and won't come back up cause of the CRZ n1 limit.
Naturally, it depends on the Capt and FE, as I'm just a lowly FO, but personally, I prefer to leave it in CLB because, as you say, sometimes we get stuck in some mountain wave turbulence and it's nice to just set "speed" mode and get some extra authority from the auto-throttles.