i have an iMac 24" (alluminium). website said, this iMac support up to 1 TB harddisk. has anyone upgrade the iMac to 1 TB? i plan to... but afraid that after buying the HDD (which is expensive), the iMac wont recognize it. what should i buy? Seagate, Maxtor, or Western Digital one? also, must be SATA-II right? thanks!