Unfortunately I cannot advise you on that choice, I have not auditioned the Audience cord.
I do know from experimenting with Purist, that constant plugging and unplugging to get "instant" comparisons with other cords destroys the Purist's ability to deliver linear tonal balance and compresses the soundstage.
I suggest listening to the Purist for extended periods, then listen to the Audience cords for an extended period. That will give you a long term comparison and allow you to decide what compromises are present with either.
There are dealers that will allow you to try before you buy to help you make this choice. In addition, the used market is very favorable for buyers at present. Buying used is not a lot of risk, except that it may take some time to dispose of the purchase should you be disappointed.
If you are searching for another alternative to the Purist, you might try a Cardas or Shunyata, or even a lower model in the Purist line than the Dominus.
Each of these have strengths and depending on your system, may prove to be your favorite. Experimentation is a must, particularly if you cannot spend the big bucks for a guaranteed performer like the Dominus.