When I got my first road bike (used) it came with a quality saddle but for me it was miserable. I went through a number of shorts and bibs and after 30 miles it was painful. After 40, about all I could think of was how much my @ss hurt. Got a new saddle and all was well. Not saying this is your problem, or that you shouldn't try different types of shorts and chamois, just realize you may have to swap the saddle to get relief.