I've got an HP internal drive, and I've NEVER had a problem with it. It's been working for a good 3 years now..going on 4, can't go wrong with HP in my book. They're basically sony drives anyway.
The problem I do have is the external thing. Why? You just get slower burn speeds working through the USB port. For half the price you can get an internal that's twice as fast. Are you afraid to open the computer?