1. Are they fast enough for streaming video / audio files? 2. Are they reliable when copying data without corruption? 3. Can they be left plugged in without overheating? 4. Are the lower to middle end drives noisy? ( I work with audio recording ) I'm on a budget so I'm not looking at the high end drives. I've got my eye on a 1TB Calvary, Seagate, Lacie, or Fantom drive priced around $150.00 Thanks.