I just ordered a Canon 60d body and am now trying to figure out what lens I should get. I have around $500 to spend on a lens right now and will prolly add some more lenses in the future, but am looking for a single lens to use right now for shooting mainly video and some stills. Right now I am leaning towards a Tamron 17-50mm f/2.8Any help is greatly appreciated and +k, thanks