Nice Paul - we went for Sigma 18-250 for walkaround lens last year - given our "style" of shooting, the wide angle was more important than the wider apperture, and are very happy with what we got. And I couldn't let Cher have all the fun with her early b'day present (the 100 macro) I got a sigma 150-500 as mine - from the reviews, it stacks up well against the Canon 100-400, although the difference in price equates to about half a new 7D! Can't wait for the boys' footy season to start, but have been very happy with the results from stalking the local wildlife!!!!
