@youngwatery I understand your predicament, most dealers don't usually have more than a couple of digital XLRs around for you to try.
If you are in the US try The Cable Company, you can get cables on loan.
If not I'd suggest getting a used Cardas, try it out and if you don't like it it'll be easy to sell.
I don't have any experience of both cables you mention but whatever you buy you'll most likely get the itch to try something else later.
Good Luck!