Brooks B17.
A close 2nd would be the Brooks C17.


The C17 is narrower than the B17, but they are effectively the same width when used.


Saddles are a completely individual product. I ride saddles that others hate. Others love saddles that I think are ass hatchets. It is completely worth the time and money to go to a shop and sit on a get impression pad. That will give you an idea of your sit bone width and you can then target saddles that are made to fit you.