-
Assuming you're going to actually be using it for sushi?
Also I doubt a £750 knife is just an OK-ish knife...
Maybe the knife threads the wrong place to ask about a knife
ChainBreaker-
Plenty of OK-ish knives about, probably best to state a budget?
Breaking down fish, or mainly using for slicing fillets and rolls?
https://japaneseknifecompany.com/product/nippon-sushi-set-of-3-knives/
Probably a good start, single bevel, definitely not a fancy steel or well finished , but should be sharp enough for occasional use.
-
You know you’ll get the use out of it, so go for it. Even speciality knives are a bit more versatile in my experience.
I have one of the lower priced yanagiba from Kitchen Provisions. The exact one isn’t on the site but was ~£250. I use it for cutting any meat without bones. So yes sushi / sashimi but also carving cooked meat. Works a treat.
The tips are very, very fine and flexible though. I’m careful with my blades but still nicked the top. Same with my deba.
Acliff
Maybelline
https://www.kitchenprovisions.co.uk/collections/yanagiba/products/yanagiba-knife-aogami-2-carbon-steel-polished-finish-yu-kurosaki
Assuming you're going to actually be using it for sushi?