Some thoughts on Stunner vs. Equilibrium:
I will take both, but for different reasons. Stunner is a very lovely pinkish color that looks very natural on me, like the flush I get when it starts to get colder outside (but not blizzard-cold). It has a slight sheen (but no glitter) to it, which makes it a good Fall color that looks natural but has enough oompf to be noticed. Having said that, it's not a strongly pigmented blush and the pigmentation is probably somewhere between a beauty powder and a regular blush. If you have a darker skin tone, I believe you can make it work, but you probably have to get more on the brush or go for seconds.
Equilibrium is the more unique color and it reminds me of the New England Fall foilage. It's an absolutely stunning blush, as it has a hint of brown combined with a subtle red. It is not too warm either, so I think it will work on warm and cool-toned beauties. It's not the most unique color in the pan, but swatched, especially on cheeks, it's a stunner (pun intended!). It is definitely a Fall color and I will certainly use it a lot. For some, it might also work as a contour, especially as there is no glitter and the sheen is rather subtle. It is more pigmented than Stunner, so if you are a porcelain beauty, you want to use a light hand.