I've recently snatched a used D700 so I'm the happiest camper this side of the western hemisphere. However, this also means having to replace my trusty Tokina 11-16mm, which is a DX lens. I wouldn't want to have to replace the Tokina with a lens that's going to break my bank account (and also my back when I'm carrying it). This, of course, means that the Nikkor 14-24 2.8 is out of the question. So what are the serviceable alternatives out there that go as wide as 12-14mm? Third-party brand? Maybe a prime, not a zoom? Help would be appreciated.