Arguably, you could say that, from the spectator's perspective, they are very similar.
However, they are different which we're not going to address in this forum.
That being said, if you're happy with your Mastermind effect, stick with it!
Once you wear that deck out and it's time to repurchase a new deck, see if spending an additional ~$8.00 ($31.95 vs $39.99) for Brent's ideas is of value to you.
Best wishes...