I used Spacevim for a few months. But ditched it and Prelude for Emacs for the same reason. These things download huge source trees of config files that are painful to change, import huge amounts of extensions that will have all sorts of broken interactions, and the documentation leaves much to be desired when trying to solve these internal issues.

In the end I settled for vanilla emacs, where I gradually build up a configuration. Once a week I pick something that's been annoying me in the past week and do the configuration for that by hand. This way I avoid bloat and it keeps things pretty sane in terms of configuration complexity. Also I get plenty of time to learn all the shortcuts in my setup as opposed to having a confusing mess of 30 extensions to learn all at once.