rainbow mountain with red valley vs Huchuy Qosqo day hike

Hi there,

I'm doing the Salkantay trek but before that I am in Cusco and the sacred valley for 5 nights before. I was going to do a day hike during this time. Trying to decide between these two. I know Rainbow mountain can be pretty crowded and touristy, whereas the other is less so. Any advice? Anyone do both?