Sure, there are plenty of great gaming goodies to be found on the floor at E3, but some of the best stuff is much harder to find. For example, SteelSeries' new Diablo III Mouse and headset, which were revealed to us when the prototype devices were pulled from a backpack. The headset packs the same 50mm drivers, retractable boom mic, and overhead suspension design of its Siberia V2 stablemate, but adds some sinister-looking design tweaks. These cans come murdered out in matte black with lava red accents (which can be turned off) courtesy