CEMA Electro Acousti cables are highly recommended in the cheap/bang for buck cables thread. They also sell DIY wire/plugs etc. What caught my eye was their UPOCC litz copper wires in 4-core round braided sections:
I recently made an 8 strand version of the same cable:
8strand round braid is easy to make a mistake, ruining the braiding sequence and having to start over again. After 3 tries i finished the whole cable and love how much more premium it feels over the 4 strand version.