My suggestion: make a simple app in both. Try out framework features you want, such as routing, source reloading, view support, testability, modularity (can I u

My suggestion: make a simple app in both. Try out framework features you want, such as routing, source reloading, view support, testability, modularity (can I use MongoDB instead of a SQL for my models?), low level features, anything else it is important to you. Trying pushing it a little over the edge: extending and metaprogram the core classes as bit and checking error reporting (what happens if I pass out a 10000 character url?). There you go. Two simple apps, that really stress what matters to you. Also, beware of frameworks that impose too much on you (http://news.ycombinator.com/item?id=1534153 http://news.ycombinator.com/item?id=1534153). And most of all: enjoy playing around.