That you've fallen into the lowest possible "f" rating trap. I have some other DSLR and wanted a clearer lens so I went with the 40mm f2.8 lens along with the bundled and some other zoom lens. The fixed focal length is nice to have but I can't imagine having only that. And since the bundled lens was 18 to 55 I can't see why I'd get the 30 until I had a very very good reason and had taken such for a test drive.
Bob