The Jags are a good starting knife. The Black Diamonds aren't so great in my opinion. They're incredably thin, both handle and blades. Thinnest bali I've ever seen. Put the two side-by-side, and it looks like a golf club with a baseball bat.
The Diamonds also wear, fast. I think because of how thin they are. They're also very difficult to manipulate, because of the space between the pins. You'll try to do something, but after a weeks or so worth of wear, the bali will try to do something else. Instead of turning one way, it'll just twist. It feels almost like knot in a rope, that when you tug on it, half the knot comes undone. Hard to explain, but you'll know what I'm talking about after a while.
They also start to wobbel immediately. Again, I think it's because of how little material there is around the tang. (Meaning when the knife is open but unlocked, you push one handle up, and the other down, and there will be a lot of room). The wobbel will get bad enough that it'll destroy your blade when you close it, because it'll rub on the inside of the handles.
It is however tiny and concealable. It's also got this kind of "Martial arts/Ninja" look to it.. I think it's a bit of a theme thing, like all the weapons named after "Special Forces" or whatever else they make up 'cause it sells better.
I still play with mine every once in a rare while.. but it's just an ordinary CCC.