Hey All... I'm slowly starting to shop for a telephoto zoom. I'm not overly concerned with money but I have noticed that there are a lot of Nikon zooms (50 - 200, 70 - 300) that are in the less than $200 range and then there's another group around $500 that are the vibration reduction lenses. Is VR worth the extra money? Maybe there are other features / quality improvements that warrant the price jump as well. Any opinions on VR lenses and how valuable it is? Thanks!