I bought a size S. The thighs are roomy, so it's easy to move around in even though I have tight thighs. The high waist makes my legs look longer, and the silhouette is neat, so I recommend it.
The back view is lovely and makes you look slimmer, and I really like the unique design. This year's lace-up denim is straight, so I think it's easier to match and wear than wide jeans. I'm of average height and tried on both M and S, and chose the S because it looked nice when worn, but the waist was tight when I sat down, so I added snaps to the waist myself and it felt great. The M and S sizes are a bit of a tricky fit, so if you're particular about the size, I recommend trying them on if possible depending on the fabric you like underneath and the comfort you prefer.