Joined June 2012
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Achievements
216 Karma
14,526 Total ProTip Views

Forked
Have a project valued enough to be forked by someone else

Mongoose 3
Have at least three original repos where Ruby is the dominant language

Walrus
The walrus is no stranger to variety. Use at least 4 different languages throughout all your repos

Raven
Have at least one original repo where some form of shell script is the dominant language

Honey Badger
Have at least one original Node.js-specific repo

Komodo Dragon
Have at least one original repo where Java is the dominant language

Charity
Fork and commit to someone's open source project in need

Mongoose
Have at least one original repo where Ruby is the dominant language
Personally i don't have a fundamented response for your question.
I have been using bash shell for all the time and now i'm trying out zshell. I like some great features from zshell like directory stack and his brace expansion but for me it's too soon to compare each other.