My finger is hovering over the "Purchase" button!  I have V3, and I'm very happy with her, but V4 seems more capable, and the complete package is so nicely priced.  Someone please help me!  I don't know what I should do.  Christamas is right around the corner, and every penny is important now, so I want to make informed decisions, and avoid buyers remorse.  Does anyone have V4?  Is she THAT much better?  Please help me...