Thanks for that neuroanatomist, well I guess the budget is around the $3000 mark.. but of course would rather not spend that much. It more important for me to just get the right lens. While I like the option of having the focal range, one review I listened to banged on and on about the price for the 70-300 L (they said that it was overpriced?) and that having such a high aperture meant that you would always get poor results from less perfect lighting – eg shooting sport indoors. It’s not often that would happen for me but I’ve got tickets to the Olympics here in the UK so wanted something that I could use for those close up shots while indoors too.

thanks