Use the saddle that is most comfortable for you. The bike doesn't matter so much it is what works for you. The important thing is making sure the saddle is adjusted properly for you. A lot of people skip this and then complain and buy more saddles or even worse they buy seat diapers that slide around and squish and otherwise do nothing or even worse than that stop cycling. Fore and aft position, tilt and saddle height is of the utmost importance and is something that people really need to get right before doing anything. Everyone's body is different and everyone's bike could be a little different so getting the position dialed for that bike is key, that way you know ok the saddle is in the right spot now I can give more accurate feedback after some longer rides. In the end though I would avoid heavily or extremely soft padded saddles because you want a saddle that gives you good support. In the end if you have a bunch of soft squishy padding you have to compress that to get support and compressing that means you are creating pressure points and pressure points lead to pain.

My butt personally likes the Brooks C17 and Ergon saddles but that doesn't mean it is for everyone.