So, it's time for me to upgrade my HDD. My current 250GB backup drive only has ~1.2GB free. I'm thinking of getting the 750GB from Seagate. Will it work in the Quad G5? No problems when waking from sleep as I've heard from some others? I've heard a couple other users talk about a 1TB (1,000GB) HDD coming some time; maybe late this year or next year. Should I wait or just go ahead and buy it for $400?