The SpydieChef is one of my favorite knives at any price. It may help if you can see and hold one yourself. Light and thin for the size of the blade and with a great clip, it’s very easy to carry. The blade has an outstanding shape for EDC use, at least for mine. That thin edge and tall blade make the SpydieChef hard to beat as a slicer, but it’s not delicate, being of relatively thick stock, and in a practically rustproof steel that holds a fine edge well but is easy to sharpen.
The handle is very comfortable for my XL hands, and the action is super smooth. The construction is simple but with great fit & finish and a lot of nice details.
I’ve held but haven’t used the 940. The blade didnt particularly impress me as a slicer, but the knife is very pocketable and flickable.
If the 486 refers to the new Nakamura collaboration, the Saibu, I haven’t seen that yet. It has a distinctive look, and it’s supposed to be moderately thin behind the edge, so it may be a pretty good slicer. The grip area seems short, so you may want to hold one yourself to feel how it fits your hand.
Regardless, I highly recommend the SpydieChef as an EDC knife.