I am looking for a case that can hold at least 9 3.5" hard drives and 1 5.25" optical drive. I do not mind using 5.25" -> 3.5" converter trays.
So far the best I have found is the Antec "Nine Hundred" which can hold 8x3.5" and 1x5.25" (using two 5.25 -> 3.5 converters).
Ideally I am looking for one which can hold 10 hard drives and 1 optical drive but I won't push my luck!