I need a wide angle lens for my Nikon D700. I had to sell my superb Nikkor 12-24mm wide lens because it was a DX format.
I need a wide angle lens desperately!!!! But I have 2 choices:

1. Wait until I've saved up enough $$$$ to buy the Nikkor 17-35mm f/2.8 AF-S (big bucks)
2. Buy a third party wide angle lens and have one to use much sooner!

As I've always used Nikkor lenses I'm not very familiar with third party ones. I know Sigma have a wide angle one that would be suitable but there may be others out there that I'm not aware of.

Any help/recommendations would be much appreciated!