When we first looked at the CM Storm Sentinel Advance 18 months ago, it was as part of a look at the first range of gaming peripherals from the CM Storm branch of Cooler Master. Today we're taking a look at a slightly upgraded version, the CM Storm Sentinel Z3RO-G. Slightly old school use of a 3 for an E aside, has this refresh kept it up at the top of the pack, or has it lost some of its charm? There is only one way to find out, so come with us now as we delve into the finer points of the Z3RO-G.