I believe that if you can find a copy of Spartan and use both, it would be optimum. Some of the mental aspects that I wanted in Warrior Athlete didn’t make the Final Cut and therefore I think Spartan picks that up. I also like to wear Pranic Vacuum when I work out.
I don’t do CrossFit anymore now that I own a traditional gym but I still do boot camp and boxing classes. I feel these help. Breath of the Gods I was considering finding to experiment with too.