I used rails about 3 years with multiple versions, and recently started to work on Node.js. Typically pure express-based websites tend to become quite messy, at least the projects I worked on. Started a new site with Sails.js 1.0 (beta) recently. It's definitely not as solid as rails. But overall I am pleased so far, except some shortcoming, ex. the lack of out-of-the-box migration system.