I am thinking about replacing the hard drive in my MBP. I have a 100 GB drive now and would like to put in a 500 GB. A few questions: 1) Is there a "better" brand to go with? Anything I need ot know when looking for one? 2) I have the 3-year Apple Care plan. I'm assuming if I were to do this myself it would void that. If I did find one myself and take it to an Apple store, would they replace it? And if yes, I'm assuming they would charge for this. Any idea how much they might charge? 3) If someone were to open their MBP and do something like this themself, would Apple know? If it ever had to go in for repair, would it be possible to just put the old original drive back in? Is there something that would trip or something to indicate the computer was opened and/or the drive removed?