I think the only reason to buy this case is if you are looking for a quieter machine. Looks are good but not great, as is the internal layout. I was not sure just what I wanted when I started to shop for a new case, but I knew the old one was too noisy.
Once I got the Sonata, I was able to figure out what the other noise sources were, and to quiet them down as well. A passive Zalman 17 on the GeForce3 Ti200 in place of a whiny little fan, and a big honking Zalman CNPS-7000-CU running at its slowest and nearly silent speed in place of the P4's stock HSF. CPU temps are very slightly lower at a pretty much inaudible noise level.
So, I am happy with my Sonata, but if you have concerns other than making the damn thing shut up, you may want to look further. As others have said elsewhere, this is not an overclockers case, at least not for serious overclockers.