Many of them aren't tightly coupled. In fact, I'd say rails is better on this front than anything comparable. Is it easier to use Mongo with Rails or Django? Wh

Many of them aren't tightly coupled. In fact, I'd say rails is better on this front than anything comparable. Is it easier to use Mongo with Rails or Django? What about couchbase? Rails makes it very easy to make an ORM work well with rails and to replace ActiveRecord with it. Better yet, what framework do you believe offers all of these things and does a significantly better job at decoupling than rails?