It wasn't that long ago that we reviewed NZXT's shiny new Phantom 820, a case that apart from its high price tag and slightly ostentatious design was pretty tough to beat. The Phantom 820 was providing some best-in-class thermal and acoustic performance, and it was a shot fired squarely across the bows of companies like Thermaltake and CoolerMaster, whose respective Level 10 GT and Cosmos II suddenly had a new, less expensive case to worry about competing with. Yet when I visited NZXT at CES 2013, they already had a descendant of the 820 on hand. The Phantom 630 is just a little smaller, a little more conservative, and a lot cheaper. At $179 MSRP it's still on the expensive side and is clearly an...