My HTPC is in a Moneual 832P case and I'm very satisfied with it. Moneual has a slim model available (Moncaso 301):
If you are willing to hunt for them, maybe you should consider the Omaura TF5 or TF8. Of course the TF5 would require a slim drive DVD and you said you want a full size DVD.
TF5 (I know, it needs a slot load DVD but you said you want thin!)
TF8 (looks real good)
Too bad they're so hard to find. Dell used to sell them in the US but it looks like they've removed them from their store.