And yes, the connector will influence the sound just as much as the type of wire conductors.
Second thought - the DIY option using the Neotech chassis wire will be superior to any of the 3 pre-made cables because you are using OCC copper (Ohno Continuous Cast), instead of the OFC copper in the pre-made cables, as well as using superior Furutech connectors. The closest option to this would be the Wire World Electra OCC ($450 at 1 meter, or $700 at 2 meter).
It’s more expensive and will push the cable over $150, but you could use Furutech FP-3TS20 power cord cable with the Furutech connectors for DIY. The FP-3TS20 is $96 per meter (or roughly $30 per foot) at Parts Connexion. It’s 14awg, but it uses OCC copper and it wrapped in a UL approved cable.
If you don’t need a 6 foot cable, you don’t need to make one. I have cables that are 2.5-3 feet and they are excellent.