I guess I'm one of the fatty's who can do the corbin thing. (I'm 180lbs, give or take a pint of ben and jerry's) I picked mine up used on the sbn site and really like it. I had one on my vfr, too. The key for me is firmer foam, not softer.
There are so many variables that'll influence our comfort on the bike. Physical attributes such as height, limb length (arms and legs), pre-existing conditions/issues, physical conditioning, to name a few. My point being that, as others have suggested, it's important to look at this as comprehensively as possible.
Sometimes it's not the seat at all, but perhaps the position/height of the bars or the pegs that's putting you in a less-than-optimal riding position and causing a focus of sorts at your, um, point of contact.
The original poster may have gotten a little bit of sit zone conditioning under his belt, but also may have wiggled around in the ****pit enough to adjust his riding position as optimally as his own physical attributes would allow.
This is why in the bicycle world we do "fits" to get the saddle and bars in the optimal position. Of course, if you start with a frame that's the wrong size, well, there's only so much adjustment that you can do...
If you can find a list member anywhere near you who's got something other than the stock bit, you'd do well to meet up and give it a test ride. Yeah, I know, who's gonna let a "stranger" ride their bike..?
Anyhow, one vote for corbin here. I'll shut up now.