It will have to be Sargent cause it definetely is not Corbin I can tell you after now 2000miles.
I had to sit on a sweatshirt to make it back home from the Ozark to Texas to save my spine and my ass (one day ride).
Returned my seat to Corbin and asked to soften the foam, which they did for free and did make a marginal improvement.
From talking to my tourbike buddies in Texas, Sargent is the marginal better seat.
I did own a Corbin from 2003-2005 on my last CBR600F in Europe which was a devine seat, but Corbin changed something somewhere.
Not content with the marginal difference, and wanting to move in to the IBA rally, I asked Russell all-Day to make me one.
Sure, they look a little bit like a John Deere tractor seat , but nobody sees that once you are on the bike.
Yes, it does cost more, I paid $780 as opposed to $460And then, your butt and your back is in heaven.... for 1000miles a day, I step off the bike and am still laughing.
WHAT a DIFFERENCE !