I like the case....just work on the wiring a bit
Some of the things I have found that help are:
Run your cables from point A to B in the straightest and cleanest way possible. Take the excess slack and fold the cable back over on itself until all the slack is taken up, and secure that bundle.
Round IDE cables are nice, but not 100% necessary. IDE's fold back on themselves very well with a little time and effort to secure them in a folded state.
Zip ties are about the handiest thing ever for cable tidying. Add to that some small sticky tabs that have cutouts for zip ties and you can really start straightening things out.
Last but not least, I'd suggest split loom for cables that can't be hidden. Grouping 3 or 4 cables or sets of wires together in a run of split loom looks pretty pro.
Here's a look at how I did mine....I used rounded IDE's, split loom for the side fan, ran the heatsink fan power wire on the outside of the PSU rail, and ran the main mobo power connector straight up and bundled it out of the way at the top of the case.
How tidy you need it to be is up to you, but with a little planning and a couple hours work, it's not hard to make a huge difference.