to a certain extent you just have to HTFU, on the other hand every body is different and some saddles are going to fit some people better than others.
to generalize a bit, the really cushy wide saddles targeted at beginners are not going to be comfortable on longer rides. The padding compresses and ends up putting pressure on parts that shouldn't have pressure on them. The Brooks saddles are really comfy when they are broken in. I'm told they dont take that long to break in but I've never had a new one myself, only used ones. The Brooks have a few downsides: they are really heavy (I guess thats not a big deal for a clyde) and they dont like to get wet