Remember that saddles and tights work together. So changing just one may not be the answer.
Saddle
Once you've broadly settled on the right width, shape (roughly categorised as T versus pear) and profile (on a spectrum of rounded to flat, when viewed from the rear), then study the shape of the one-piece saddle top. Imagine it removed from the saddle frame/base. Then look at the chamois (plural??) in various padded shorts and make sure they are roughly the same; you don't want a chamois shape that nips in at some point leaving a seam between the saddle and your inner thigh (or points higher).
Padding
Everyone has a personal preference as to how thick is most comfortable, and this will vary a great deal according to both the type and distances of your rides, your bike's geometry and how the bike fits you. But generally speaking, once you figure out the total amount of padding that seems to work, divide that between your saddle and the pad in your shorts. In other words, don't rely on just one or the other for the padding.
My own personal example is that I prefer fairly minimal padding overall but must have at least some. The Selle SMP Dynamic is the right shape, width, profile etc with a uniquely designed central channel that eliminates my particular pressure point problems -- but the padding is indeed minimal. Then for shorts, I prefer medium-to-thin padding with, most importantly, minimal profiling/shaping in the chamois.
Key to all this - and as stressed by everybody else - is to remember that NO ONE has the answer for you, because none of them ARE you. You will have to find your own way on this, but opinions and experiences will be helpful - some more so than others!