I own(ed) both (just sold the ZT0452CF in the forums last week
First I will say that I love both of them. These are literally in my top 5 favourite knives of all. But to choose one over the other, for me I would rather have the Bedlam over the ZT any day. The Bedlam just happens to be my favourite knife of all. There is nothing wrong with the ZT; it is amazing, but the Bedlam is just better.
When I first saw the Bedlam, it was love at sight. No other knife I’ve ever seen with more character, more soul, more charmisa, more beauty. Since the day I discovered it, there has been nothing I liked more than it. My absolute favourite knife.
The ZT0452CF is a gorgeous knife itself to say the least, in my top favourite knives as well. I am in love with it as well, I love the design so much I even bought the ZT0452TI the titanium version. It’s so beautiful so gorgeous and so well built, smooth action, it is probably my second favourite knife, after the Bedlam.
I discovered the Bedlam not too long after I started to be interested in knives, when I had maybe 5 or 6. Had to get it. But it wasn’t until I was a bit deeper into collecting that I finally got it, around 3 months in. I realize that have a very obsessive personality so when I take interest in collecting something, I will aggressively collect it, and I continued buying knives like crazy, but nothing I ever came across did I like more than the Bedlam.
It was only after my collection was quite large did I get the ZT0452CF and the TI version. I favoured the all black Tactical knives from the start, and it wasnt until later did I start to see and appreciate the beauty of satin blades and the whole flipped framelock ball bearing stuff. The first time seeing the ZT0452CF in person did amaze me.
Anyways. You can’t go wrong with either one.
I will add that it appears that everyone else who has both favours the Bedlam though

which goes to show just how special it is.
I would pick the Bedlam as it’s my favourite knife.