I've just got myself one of these lenses (AF-S 18-70mm F/3.5-4.5) to go with my shiny new (well, 2nd hand

) Fuji S3Pro. The things I particularly like about it are the good sharpness at pretty much any aperture and focal length, and the very good chromatic aberation. It's not quite so good for vignetting fully open at the wide end, and there is some distortion at wide angle, but these don't matter so much to me as I'm mainly interested in landscapes.

I found a very useful review with helpful interactive graphic charts at SLRgear, here.

CameraLabs gave it quite a good rating on their review here.