I have a Canon Xsi, and I'm thinking about getting a Tamron lens. I am trying to decide between the Tamron AF 18-270mm f/3.5-6.3 Di-II VC lens and the Tamron AF 28-300mm f/3.5-6.3 XR Di lens. The first one has vibration compensation and the other one doesn't. I want a lens I can use for everything, so I don't have to switch lenses so often. I would be using this lens for everyday, vacation, and my dd's sports. Please give me your opinions, the one with the VC is $90 more, is it worth the $90 to get VC?