Help choosing this blush

I am looking to buy powder blush for summer days. I own one blush which I pretty much love (rare beauty hope) I am inclined towards NARS mini in orgasm edge or tarte Amazonian clay blush. I also found that NARS blush duo ( full size of NARS orgasm liquid, and NARS orgasm edge powder blush) at 40% discount. Should I buy the duo or it will be a blind buy for me? Help me make a wiser choice for my blush purchase.