Out of the two (Merb and Camping) I like Camping the most. They're both quite light weight, but camping is even more so. For really simple stuff it's the go.
Merb hits that sweet spot between Camping and Rails. It's more full-featured than Camping, but without the overhead of Rails. For example is has some nice methods like respond_to for dealing with Ajax calls which Camping lacks (although it could be added easily enough).
Also, I wouldn't recommend moving to a Rails app straight away if you just want start prototyping. I've used Camping for prototypes that I've later moved to Rails and it's really not much work.
by Mr eel — Dec 10
Merb hits that sweet spot between Camping and Rails. It's more full-featured than Camping, but without the overhead of Rails. For example is has some nice methods like respond_to for dealing with Ajax calls which Camping lacks (although it could be added easily enough).
Also, I wouldn't recommend moving to a Rails app straight away if you just want start prototyping. I've used Camping for prototypes that I've later moved to Rails and it's really not much work.
Go for Camping I reckon!