Do any of those have more or at least equal content? As far as length
Flexible Survival is quite massive, but scenes are usually much shorter than in CoC/TiTS.
And also much more varied in terms of kinks, which may or may not be appealing. (To me, it isn't.)
Well, extreme content is usually goes after warning, and there are even settings to disable some encounters by kink type.
I didn't get any warnings before being flung into vore content (despite have set the game to disable it), so I pretty much blew it off altogether. That, and too much M/M for me.