First, I will say that I have not tried the one specific to the C14, but I have one on my other ride which looks like it has the same form. I thought of buying that one on ebay for $190 while it was up (I saw it before it sold,snoozed and loosed...). Oh, I have a 30' inseam.
Corbin is pretty hard,but has a wide area. In all seriousness, if you got a fat a$$, it works at pretty well. The key here is support for both butt cheeks.After six hours, my rear starts to hurt but in all fairness, after six hours, I think it would hurt no matter the seat.
Sargent low- didn't like what it did for riding position. Felt more like a crotch rocket jockey. It was also very hard. On the plus side, the lower seat changed the balance of the bike for the better and it was nice being able to get more foot on the ground at stop lights. One nice surprise was that it was easier to get my leg over the bike when getting on it. As expected, it gave a little bit more wind protection. Despite my complaints about it, I would want one if I did a lot of city driving/commuting in stop and go. Seeing how most of my driving is non stop and I like the position that the stock seat gives, I passed.
Sargent regular- for me, this the best. I like the position, there is more area for the butt so it is a bit more comfy for long travel. If you have a silver bike and want either one of the Sargents, be sure to spring an extra $20 for silver piping- it looks awesome, best looking seat around.
Stock '11 seat- I think it is the most comfortable seat of all of them, for the first 30 minutes. It seems to have two different types of foam density that work well with the suspension. Hit a hard bump and you can feel the denser foam compress. Problem with stock is that it is too narrow for the wide american butt and it feels like it forces you into the tank. Sudden braking can result in a real nut crushing.If you are 6' tall and weigh 150lbs, the stock seat can't be beat!