Hi all, I've seen a few of these crop up for sale and I'm interested in supplementing my 28-105 (which I love). It seems like a fantastic range in a relatively compact form; unfortunately most of the reviews seem to pan the lens incl its later VR variant, however the very latest f4 fixed aperture seems to fare better but its pricey. Reviews seem to go along the lines of: very versatile but with poor performance & distortion/softness at the extremities. I'd probably use the lens on my F100 and occassionally D700. Any forumites have experiences with the lens ? Does the versatility outweigh the optical issues ? Would I be better off with my trusty 28-105 and just getting a wide-prime ?