I shot about 200 shots this weekend with my 2.8 70-200VR and also with my kit lens (albeit very little, in comparison)....what is the huge difference in the way these two lenses are able to process a shot? I know the kit lens isnt as fast and doesnt have VR but holy vibration reduction, batman, what a difference in the two....(and i love the kit lens)....what makes this lense give that much better shot? im asking because i'd like a lower end version of it (if it exists)..thx. (sorry for the duplicate, uncle frank)