I used to have that Tokina lens back when I had a 7D, and it was the first one I thought of initially. But ya, it's only APS-C, which isn't a dealbreaker, but I was just hoping to cover my bases by getting one that I could also use on a FF cam. I've also actually owned a couple of Rokinon's 14mm lenses (one EF mount and one Sony mount), but the moustache distortion on them is quite bad. Also 14mm on APS-C isn't quite wide enough for my needs
As for budget, ya I'd say I'm looking to spend less than 700ish. Also I don't need a zoom, a prime would be fine.