I browsing NewEgg looking for a 500 GB external HD for my MacBook. I don't expect to heavilly use it except for storing movies and Time Machine back-ups. Examples: http://www.newegg.com/Product/Produ...414+131021357+1310221309+1036007800&name=3.5" -- Fantom Titanium-II TFD500U16 500GB 7200 RPM 16MB Cache USB 2.0 External Hard Drive $90 after rebate -- Cavalry CAXE CAXE37500 500GB 7200 RPM USB 2.0 / eSATA External Hard Drive - Retail - $85 after rebate -- Western Digital My Book Essential 2.0 WDH1U5000N 500GB External Hard Drive - Retail $123 Two Questions: 1) How much should I expect to pay for a 500 GB drive that probably won't crap out on me a year after I buy it with this sort of usage? (Not too much heavy lifting, so no using it as an Adobe scratch drive) 2) Most drives in this range are USB 2 only. Is USB 2 fast enough for me to stream movies off of it or do I need to get a firewire enabled drive?