I will add my personal experience on a 1st gen. (disclaimer: the following may not be true on a 2nd gen or on your butt)
I had a Corbin Canyon close on my bike when I bought it used. The OP was a short guy. It was hard (uncomfortable) and pushed me into the tank. I traded my close for a non-close Corbin Canyon with some other forumite that was also short. Not sure how he made out, but the non-close was still way too hard for me and did not come close to cradling my butt as was promised by their propaganda.
Bought a stock seat on eBay for cheap. I was lucky on an auction and wanted to see how "bad" the stocker was. It was actually better than either Canyon.
Sent my stock seats to a place called... "Kno-Place" in south dakota to have gel inserts and memory foam installed. That stretched the "3 hour" stock seat to a 6 hour seat. Still... I knew there was better.
Bought a second hand Rick Mayer seat from a crash bike. It was vinyl, but a dual. Cheapo, but didn't work for me. Sold it for more than I paid.
Finally... (sort of) I sent my previously massaged stock seats to Russell. The built me a contoured front leather seat in the "half moon" pattern and recovered the rear to match. So the rear still has the memory foam and gel, under the leather. My seat is the shizzat!!! My wife now wants me to send her half back and get it contoured for her before we tackle the Canadian Maritimes next year (or so goes the plan). She doesn't know that she's going to EOM next year yet (hope she doesn't stumble on this thread till I'm ready to reveal...)
Do yourself a big, big favor. Skip the trouble. Do the Russell 1st. There is no better seat that I am aware of.