If I had $400 to spend on a bass, I'd get an SR305.
If I had $1000 to spend on a bass, I'd probably still get an SR305. Love those basses. So I'll vote for that.
Then again, I think of the Jackson brand about the way I think of the Dean brand, and I accidentally fell in love with a Dean earlier this year and brought it home to be my one & only for the foreseeable future. And that Jackson is gorgeous. So all things considered, I'd find that mighty tempting as well.
In any case, you probably can't go wrong with any of them, so no worries, just have fun!