OK Red, here goes...
Had several Corbins as well as other upscale brands to compare (Sargeant, Meyer, Guts, Renazco). For me, Corbin hands-down has had the best designs for ride time & range. Once rode my old (former) 1150GS with a Corbin 20 hours straight, from Tofino to SF the long way (minus ferry time). Only thing that didn't hurt was my butt and lower back. They 're not soft or cushy (at least none of mine have been), but are rather firm, and on first touch you might wonder how they're ever going to feel comfortable. It's the way they shape and form their pan and the contact geometry, it just distributes pressure evenly and effectively over your anatomy.
Last week I finally bit the bullet and ordered a Corbin for the Trail. Honda's seat design on the CT125 is pitiful (but the seat on the Monkey is really great -- go figure) and that Corbin order just had to happen. Delivery takes a few weeks and yes $480 (ow) is pricey, but why spend upwards of $5k on the bike and then suffer riding it, instead of resolving a badly needed Honda shortcoming so it can be fully enjoyed. IMO/IME discomfort is distracting, robs focus, attention, confidence; not fun or safe. Even without having seen/sat in-person on a CT Corbin, I'm confident I'll be satisfied because of their performance on bikes past. Have yet to hear complaints or disappointments about Trail 125 Corbin, can't say that about other options.
So that, plus....if you do buy a Corbin, your wallet will be that much thinner, less of a fat lump to sit on, and more comfortable as well!