Yes it was a good buy - had gone within 24 hours
Stephen - thanks for the advice - very useful.
I'm currently leaning towards the 100-300 Sigma EX + 1.4x TC ... am I going to be heavily disappointed ? When I looked at Pbase galleries, I was a bit disappointed with the results with the Sigma 80-400 OS .. and 50-500 is too big for me really to be used for anything other than airshows.
Thanks, Mark.