For the money it's hard to beat...
I have a 80-200mm 2.8 D lens which is built like a tank and performs better than this. But for half the price, a lot less weight, and extra reach to 300mm; this lens can't be beat.
It has a pretty good VR system and relatively quick auto focus. It's much lighter than the pro lens and performs almost as well. It's cons are: slower f-stop 4.5 vs 2.8, variable aperture (dependant on zoom), some purple fringing (which can be fixed in post processing), and a more fragile construction.
My first copy of this lens rolled off a park bench onto a wood boardwalk (2.5 feet tops), it was even sheathed in a neoprene lens pouch, and it stopped focusing. I tried to live without it, but the 2.8 is too large/heavy to drag around for everyday shooting. The long focal length gives a pretty great out of focus background separation for portraits. I usually bring this, a 50mm and 28mm prime to family outings.
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