I'm thinking about picking up a 300mm f4 non-is as I can get one for a few hundred less than the IS version used. I don't expect to use this lens handheld, so the only drawbacks tome are age and non-servicability. I've read many reviews that put the IQ better than the IS.
Can anyone vouch for the reliability of this lens long term? Any thoughts on the matter? Lens will be used for outdoor sports and theater on the 50D.