I've owned them all corbin, gel, and now a tobin.
Gel is similar to stock but is a little more comfortable on long distance rides, as far as holding you in place ---no more than the stock seat.
Corbin is a saddle for the most part & its very comfortable on long distance rides and actually does keep you planted in place for most street excursions. Imagine a horse saddle and thats a corbin --- the only downfall for my part is its wider than stock which means with my 30 in inseam i wasn't real comfortable because my feet weren't as planted at stops and also i found my feet moved further out on the pegs.
Tobin -- I haven't been on a long distance trip yet--giveme another month.. But when i had him do it i asked him to trim the sides and add additional padding to the seat (I needed that etra cushion lololol). So basically he built it for distance riding. And as you know It has the back stop, so i think if you let tobin know what you want you will be better off with a tobin seat. My $.02