I haven't bought a new case in probably a decade and I'm looking at one of these four to replace my Cooler Master Cosmos S, so I'm looking for some guidance. Rather than buy new kit I'm going to transplant what I already have, so the case needs to fit an ATX motherboard, a Cooler Master H100i GTX, a Vega 64 Red Devil, two 3.5" drives and a 2.5" drive. I've still got a 5.25" Blu-ray drive in the current case that I barely use but I'm not sure I want to get rid of, but if the 601/801 are a lot better than the 600/800 I might be able to part with it. The Cosmos S is mostly empty space so I wouldn't mind going for something smaller if everything would fit without issues. I've read some reviews but I'm no closer to a decision, so any thoughts on the relative merits of the cases from anyone who's used them?