Don’t discount that the saddle that you thought comfy for previous rides might not be as comfortable on longer ones. i was all over Charge Spoons since they were launched, but then last year after upping hours with a view to doing a 12hr solo, found that after six or seven hours they weren’t supporting me in the right places.
Try borrowing a few others and see if any suit you better. A lot of shops have try policies, or borrow some from mates. In the end I went to Spesh and sat on an arsometer, before settling on a body geometry one for fat arsed individuals (sorry, wider sit bones) which has been good ever since.