Unless you live near a good brick and mortar dealer, I would just send the cables back to Straightwire. Either way, you will have to pay, so why quibble?
As far as upgrading XLR's, if your equipment supports AES 48, then it should make little difference between cables.
Bob
As far as upgrading XLR's, if your equipment supports AES 48, then it should make little difference between cables.
Bob