I love the April fit. I have all three. They fit amazing. I am 5,6 weight 161lbs (muscular) and I wear 26. I like mine snug because they like all jeans they stretch a little.
I'm 5'7", 140 lb, and got the 27s. I've always wanted a pair of acid washed jeans, but not a fan of the true 80s mom jean fit, so when these came out I bought them immediately! I have the April cut in the medium wash and they're my favorite jeans, and these are just like them, but a little more snug - which is an improvement, because the my other Aprils are a little loose in the waist and crotch.