I shoot all sorts of things just now. Bit of street, architectural, landscape, wildlife, sports, anything really so want something quite versatile but as sharp as i can get on a budget. Also I already have a 50 1.8 and 55-250 (which i will one day swap to the 70-200 f4L, for wildlife and sport). I find the 28 just too long with the 1.6x crop, so want something a bit wider, would probably prefer that to the long end really. Budget is quite tight, probably wont be swapping it for another month or so, but if i went for the 15-85 i'd probably have to wait till early next year.