I've had both folders. I liked both of them.
HOWEVER, the closed length of the 0450 is 4.125".
The closed length of the ZT 0808 is 4.375".
For me, that makes all the difference in the world. The zt 0450 is just too SHORT for my hand.
The ZT 0808 is okay in my hand and I still own it. I sold the 0450 right away, even though it's a nice flipper.
If you have SMALL hands, then the 0450 is very nice and I would suggest that one. I kept the 0808 although I'm not wild about the shape of the blade...
The blade thickness of the 0808 is 0.160" while the 0450 is only 0.120". For a CASUAL user, like me, I would much prefer the thinner blade-width of the 0450 as it will slice much easier. The thicker blade really is NOT something I can use, but at least I can hold onto the grip...