Any suggestions as to which one to really get? Looking to predominantly use it for real estate/architecture, and events/nightlife so my general requirement would be to be able to get usable results out of RAWs with f/5.6-8 at the very, very, very top stretch (can be past for RE, but definitely not nightlife) and all bags of reviews are mixed without any real direct comparisons that I could find.

Price points for AF/AE are the main attraction vs the focal range because realistically I just need something along 15mm for any of these.

Ability to use filters, as with Sigmas and the cheaper Tokinas is a pretty big plus.

Also need to narrow it down and score one prior to this weekend, so really hope to get all the opinions in as soon as possible!

And many, many thanks guys and gals!

› See More: Sigma 12-24 v1, v2, Tokina 17-35, 16-28 ??