Hi,
I came across this article which explains the difference b/w Ext.data.JsonStore and Ext.data.Store, which I understand

http://stackoverflow.com/questions/2130721/whats-basic-difference-between-jsonstore-and-jsonreader-in-context-to-ext-data

As I am new to using ExtJS, what are the differences b/w them when it comes to
a) favored way of retrieving JSON
b) better coding standards
c) any performance improvement of using one over the other

Thanks!