We're using ASP.Net MVC2 with Mongo DB as well. So far the experience has been fabulous. Even more so considering that the entire development process from codin

We're using ASP.Net MVC2 with Mongo DB as well. So far the experience has been fabulous. Even more so considering that the entire development process from coding to deployment has been done completely on Linux - giving us more flexibility with deployments like being able to use Varnish for caching, etc. We spent three weeks evaluating Rails, Flask and Django for the app, and the team had experience with all three tools. The risky move to a statically typed, compiled environment paid off because of a solid IDE and good surrounding tools.