I love the banana shade in this palette. It's one of the best banana powders I've used and it looks great on my skin. The bottom row is unusable for me though, which is a shame because those shades were the reason I bought the palette.
I like the formula of them (apart from the bottom middle, which I found to work differently for some reason?) They are very pigmented, but are still quite easy to blend. You don't need to use a lot of product and they build up nicely. My problem with the left bottom and right bottom shades is the actual colour of them. They're both super warm and look almost red on my skin. I'm quite pale, but even when I use with fake tan I still find them unusable. Even used as bronzer, instead of contour, I find that they just look too warm and I hate how it looks. I've tried using a very light hand and still had the same results, it's just the colour of both those powders. The middle bottom would be the perfect contour shade for me, but I find it to be super patchy compared to the others. I can never get it to blend nicely and it always looks a bit muddy on my face, no matter how much product I use or what brush or how much I blend or how much I don't etc.
The other two powders in the top row don't really do a lot for me. I find that they blend into nothing and don't find them to be positive or negative, just kind of there.
I've really only kept this around for the banana shade and the hope that the other shades will work for me. They haven't yet and I do regret buying this palette - it was quite pricey and liking 1/6 of the powders isn't enough to justify that price for me.