If you have a Corbin butt, buy a Corbin seat. Admittedly a substantial gambel if you don't know what kind of butt you have...
I have tried Sargent and Corbin, both are head and shoulders above stock saddles, but, for me, the Corbin is my favorite. I haven't felt the need to try Russell or Mayer, but if I had a bike set up for long distance riding I'd, probaby, roll the dice with one of them.
The problem I have with the new motorcycles I had in the late 80s to late 90s is that they, mostly, have center stands as options, their seats suck and their exhaust systems/intake plumbing are fugly and way too restrictive. By the time you get the machine broken-in and fitted with the right seat, pipes, intake you get to pour more money into upgrading the suspension, and, usually, the brakes. Then, to add insult to injury, you wake up one morning and realize that all the money you spent doesn't add a penny to resale value, and may, more likely, decrease said value.
The expression, "putting lipstick on a pig" came from somewhere...
Best.