My next purchase is going to be a wide angled lens, for my Minolta 7D camera.

I'm not really sure what to get, I want something that goes pretty wide, and I've heard of leneses that have macro capabilities along with wide angled lenses. Here's the thing, I dont want to spend TOO much money on a lens, I want to stay below 300 dollars..if its possible. But if anyone has any suggestions/comments, please post 'em. dont be shy!!

Thanks for any help ahead, this forum has been a great help to me.