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Assuming autos are legal where you are, I would check out the pro tech newport. I have heard nothing but good things about the brand and have been very tempted to pick up one of their larger autos.
That 0450 has also tempted me more than once, too.
You've asked a couple of times about the Sebenza, so here's my take. The Sebenza is NOT my favorite folder, but it is my REFERENCE folder. By that I mean it's the folder I use to judge the quality of every other folder in my collection. That's just how well-made it is.
The high end leeks are worth looking into: Damascus, OCC, S30V G-10, or, if you can find one, ZDP-189 and Titanium.
Small Sebenza is a very nice knife, but it has very little in common wit the Leek. The blade is much thicker (also behind the edge) and is not particularly good slicer. It is also a much stronger and smother knife.
True. About the only thing they have in common is blade length (~3") and overall length (~7"). But then there are a lot of other knives folks have recommended here that don't have a lot in common with the Leek. For my money, I'd still say the 0450 is about as close as you can get (flipper, KVT, ~7" length, metal handles), particularly if you want to keep it in the family.
You'll love either a BM 940, 943 or a ZT 450......both simply amazing knives, perfect for EDC!! Step up from the Leek for sure!
If you're thinking of the 450, check out usamadeblade here on the forum.....he has some already anodized!
Good luck!
Joe