I think the 18-55VR and 55-200VR are a good pairing for a budget shooter.
To me, having the additional 200-300mm (with the newer 55-300VR) is definitely useful, especially if it isn't going to cost you an arm and a leg for the extra reach.
I do think that once you get over 150mm on a DX camera, kinda hard to get fast enough shutter speeds to freeze hand-shake or motion blur.
If u r considering buying the 55-200, then I will suggest to consider this option. Not really sure abt the IQ but the reach of my 200 is juz not enuff. N like one of the bros said, after 150mm, it's hard to shoot handheld (even with vr on).