It's like Rails vs. a custom web app. If you asked me to maintain an existing Rails app, I would feel pretty comfortable just knowing that it's Rails. If you as

It's like Rails vs. a custom web app. If you asked me to maintain an existing Rails app, I would feel pretty comfortable just knowing that it's Rails. If you asked me to maintain your web app that you build from scratch that doesn't necessary follow standard patterns like MVC, I'd have a much harder time.