What exactly opinions do you want? I tried all of that stuff except of Middleman and ended up writing my own. Jekyll is way too opinionated, no way to make the website exactly what you want it to be. Hakyll is very configurable, but the very fact that it's written in Haskell and needs to be recompiled after every structural change turned out to be way more annoying than I thought. Pelican would be nice, but the last I checked it was quite unstable and buggy, unlike Jekyll and Hakyll. In the end I thought that writing 200 lines of Python code to do exactly what I want is easier, than to explore what's out there and how to make it to do what I want.