I find Datamapper's codebase quite easy to follow. It uses a modular architecture, separating different concerns in different modules, which can be hard to foll

I find Datamapper's codebase quite easy to follow. It uses a modular architecture, separating different concerns in different modules, which can be hard to follow if you are new to Ruby. About the raw SQL: Sequel excels at this. And you can combine easily both. I found the post interesting, but would have loved to see more examples to the arguments. Specially in the frameworks the author gives so much praise.