Hi,
I deal with the audio stuff here so I'll answer any questions you have
The Cosmos is a highly rated case and makes a reasonable Audio Spec build. I myself side with you through and prefer something a bit more plain and unintrusive.
I spent a week a few years ago now testing all the cases that fitted the profile I built up in my head for the perfect audio p.c. case. The winner was in fact the KL03B!
The Cosmos has built in sound proofing but it has more ventilation holes, which means more places for the noise to leak out. The Cosmos is Aluminium which isnt' my prefered metal for case construction in silent builds but the sound proofing makes it acceptable.
The KL03 is solid steel. Doesn't squeak or rattle at all even without sound proofing, so once we add some in for you it's pretty much dead noise wise. For some 3rd party feedback have a look here:
If your thinking about going for it, then by all means do. It's a quality case.
I haven't currently got an ETA on these. I've just tried chasing the suppliers but as they are in Germany they've knocked off for the day. I'll chase them in the morning and let you know.
Both cases can handle long form cards and i've tested them both with creamware sonic core which I think are about the same size as the Digidesign one's so the shouldn't be any issue as far as fitting those go.
If you want a 9800 Gt fitting as it's from Gigabyte we can order it in and test it for you during the build process if you don't have it already. I might be able to order in the Digidesign card as well as we deal with Avid if your interested but that one's a little more uncertain.
You can spec which ever psu you want in it. What sort of wattage are you interested in?
I've modified the configuration tool to allow you to remove that from the spec now
Pete.