One caveat that I'm going to throw in here.
The closed length of the ZT0770 is 4.3", according to the manufacturer.
The closed length of the small Sebenza is only 3.935", according to the manufacturer. It's a wonderful knife, but if it's too small for your hand, you can't really use it effectively.
I've owned a lot of ZT's. I've owned a lot of small (and large) Sebenzas. So be careful...I CANNOT "control" a small Sebenza, as my hand is too large. I carry an Umnumzaan, which is about the same length as a LARGE Sebenza... (4.77")
My hand-size requires a closed length of at least 4.2", which means I can enjoy and use something like the Spyderco Sage series or the Spyderco Caly series, which exceed that necessary (FOR ME) closed length of 4.2".
Obviously, YMMV.