All my bikes have different saddles, mostly because that's how things worked out. But the saddle was also chosen with that bikes riding position and style factored in so it was best or most comfortable for that particular bike.
BTW- the type of sores your describing might not be from the saddle as much as your clothing. The more common complaint about saddle issues relate to pressure point pain, not to friction.
In any case, you shouldn't feel locked into anything, and need to experiment and find what works for you, with the "for you" being key.
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