I found one of these on Craigslist (bundled with another Canon lens and film camera) for $60. Curious to know if anybody has a good or bad opinion of it. I currently have a 55-250 IS and borrow and/or lust after a friend's 70-200 2.8 non IS. Would this old lens be worth the $60 or am I better off just using my 55-250? I think it may be a macro lens also, and I don't have one of those yet... Anybody got one and like or hate it?