Is there anyone currently using new Sigma 10-20mm f/3.5 lens? I know it's new and just came out, so just wondering how much you like it. Anyway, Im looking for wide angle lens. Body is D90. 1) Tokina 11-16mm 2) Nikon 10-24mm 3) new Sigma 10-20mm f/3.5 Most people recommend me Tokina 11-16mm, but most old Sigma 10-20mm users love the lens. So, I think upgraded 10-20mm sould be great! But, I also like the angle, nikon 10-24mm, but it's pretty expensive. So, just wondering if you were me, which one would you buy? Thanks.