Hi All, long time lurker. just got my first mac, a rMBP with 750M dgpu. what's the first things I should do to make sure all the components are in tip-top shape? burn-in software, diagnostics, dead-pixel apps, etc? I got a Kuzy rubberize hardcase enroute, but are there better hard cases out there? should I go overboard and put protective skin on first before I put the hardcase on it? I don't want dirt to be trapped between the hard case and the laptop.