If you want truly unique then you need to go full custom.
If I had to choose one out of the five presented it would be the Umnum, although I've had two and got rid of them. I'm just not a fan, but the fit and finish is exceptional so that would be my choice of the five. I would like a little Warren Thomas necker, but I've never been a fan of his folders. Strider, meh... The SR-1 is pretty sweet, but I prefer the Sleipner steel to the Damasteel.
I would truly go for option 6. To me, that's full custom and a lengthy wait.