jerm wrote:
This lens is a "jack of all trades, master of none."
Yes, it has a very wide range of focal lengths, but at the sacrifice of image quality. It does not even come close to the 24-70 f/2.8L or the 70-200 f/2.8L, and both of those are a stop or two faster. Unless IS is important to you, you could buy both for about the same price as the 28-300.
Sorry but there is no way that he could buy both of those lenses for the same price as the 28-300, even used those two lenses are over 2K.