I have a 3TB Seagate USB 3.0 HDD now. I'm looking to get another drive to mirror everything, or at least iPhoto and iTunes files. I am only using just over 1TB for these now, less than 1.5TB for all my files. I do plan on adding movies somewhat regularly, so wouldn't mind going larger. First question, is Thunderbolt worth it at this point? If use it as my main storage then, and mirror everything to my Seagate that I have now for backup. I can get a refurbished Thunderbolt 3TB Lacie d2 for $160 from MacMall. Just don't know if Thunderbolt is really worth it or not. Any other suggestions on a drive? I'd like to buy from Amazon since I've got a large gift card balance I could use, but want the best deal either way. Recommendations on a good enclosure? If that's a good way to go. There's so many brands, some cheap and some expensive.