Well I need an intermidate zoom and have missed my 70-200 since I sold it two or three years ago. I don't like having to take off and put on extenders, but also do not want two huge zooms either. Is the 2.8 mk I or mk ii with a 2x extender the same or better than the 150-500 naked. I know it isn't a 500, but with the 1.3 it would be close to that. Thanks for the insight.

