[atomical]

I went through all of the javascript frameworks and found Sproutcore to be extremely confusing. A lot of the documentation and tutorials just aren't there to make it a mature choice. I'd say Sproutcore is more cutting edge than state of the art.

[chipramsey]

I can see why you would say that, especially back when we initially started looking at it (before Yehuda went over to Strobe), but more recently the docs/tutorials have become much better. We have invested a decent amount of time learning the framework and it has become really productive for us. Also, I haven't seen anyone using statecharts with the other frameworks. Not that they aren't, just haven't seen it. If you don't really know what statecharts are or what it means to have one backing your application, I would recommend just looking into it. It was eye-opening (for me at least).