I have both the EasyVR 2.0 and Voice Recognition Module Rev2 modules.
I can say that the EasyVR 2.0 is much better than the Voice Recognition Module Rev2.
It has greater accuracy of recognition, a 3ft+ range with included mic and more options, worth the extra $$ to me. I use one in an Arduino A.I. project.
I bought my EasyVR 2.0 from Sparkfun , they sell the module on a shield.