I test saddles by feeling where the pressure goes. If i can feel my sit bones being well supported, and little pressure between, then Im fairly certain it will work.
Personally I prefer a very hard saddle with little padding, and find that the shape is more important, but for me, a central cutout does not work.
You may find that your best saddle is a lightweight or a heavier model, but unless you are a weight weanie, dont let weight be your primary guide.
I use a Brooks, and they are not the lightest, but do conform to my own particular shape.