Is anyone planning on swapping out the stock 500GB 5400rpm for another with the same specs, but possibly better build/company? I currently have a WD Scorpio which is supposed to be a great drive so I'm wondering if it might be worth replacing the existing one with it (if it's not the same) or if the differences aren't worth it. Any opinions? I know when compared to the Seagate the Scorpio is related much better...