Can anyone recommend a smallish case with four optical drive bays? I want to fit an Icy Dock MB-455SPF which takes three bays plus one ODD. I only need space for one 2.5" drive internally plus a mATX mobo. I'd prefer the PSU to be at the top as my work room is dusty so I don't want to be cleaning a filter on the bottom of the case every few days. Any suggestions?