Make your own. I've made everything from simple 2 wires per channel cables to 8 wires per channel. I even showed my 16 strand branded cable to the braiding guy from Axios, and he was impressed. That cable was a serious project! As stated earlier, you might have to listen to the same 1 minute of song a hundred times to tell the difference, and even then, any difference will likely be minimal.
You might do fine if you simply shorten your stock cable. It will get lighter by the exact percentage of cable you chop off!
Terminating it either XLR or TRS isn't hard, if you know how to solder. Alternatively, building your own simple, lightweight cable would cost $25-$100 depending on materials. Of course you can spend way more with expensive wire, sleeving, an/or plugs.
Aesthetics can also play a part in your decision. Cable noise (sometime called microphonics) can also play a part. It all depends on how you listen and what you want.