I have two 350 Seagate Hard drives in my case and I'm about to order one more for my extensive DVD collection . Right now I have my two hard drives in the usual hard drive bay area in the front of the case on the bottom. The hard drives are one empty hard drive space apart with a fan blowing on them. If I add the new hard drive it will have to be right next to one of the other hard drives. I'm not sure if I want to do that because they are like heat rocks and even with a fan there isn't much room for the air to pass between them. I'm thinking about putting the third one up in one of the empty CD ROM bays on the upper part of the case. Would that be best or is stacking them not that bad and it's only in my head?