When comparing Cactus vs Middleman, the Slant community recommends Middleman for most people. In the question“What are the best static site generators?” Middleman is ranked 7th while Cactus is ranked 34th. The most important reason people chose Middleman is:
[Minification and compression](http://middlemanapp.com/advanced/file-size-optimization/index.html) are as easy as setting a few configuration options, and [unique asset hashes](http://middlemanapp.com/advanced/improving-cacheability/) are available to allow you to invalidate the cache of files that change regularly.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Many out-of-box plugins
Pro Easy to install and customize
Pro Simple
Pro Built in minification, compression, and cache busting
Minification and compression are as easy as setting a few configuration options, and unique asset hashes are available to allow you to invalidate the cache of files that change regularly.
Pro Support for a variety of templating languages and preprocessors
Middleman supports lots of compiled languages, such as Less, Markdown, Textile, CoffeeScript, Stylus and more.
Pro Extensible and flexible
Middleman has a resources page full of official and community extensions.
Pro External pipeline management with Webpack
Replace your Gulp, Grunt, Bower configs
Pro Embraces Rails conventions
Middleman follows established conventions so if you know rails, you can easily pick up middleman.
Pro Easy deployment options
Cons
Con SCSS build time
Slow build time and live reload when using scss framework. ie. Foundation, burbon, ect...
Con Too much magic happens
For new users it is hard to understand what is going on and why.
Con A little more complicated than other static site generators
Middleman is a big piece of software, it's not simply a static blog generator. Because of all the functionality and flexibility it offers it can be a little more complex than other static site generators and a little harder to learn all of its bells and whistles.