I'm going to expect you are most productive in the framework/languages that you know the best. Unless you are using a poorly supported set of stuff, there's pro

I'm going to expect you are most productive in the framework/languages that you know the best. Unless you are using a poorly supported set of stuff, there's probably not a reason to switch as you will likely become less efficient at what you are doing, at least for awhile. Your ability to operate in a system is probably more important than the system itself.