So I recently bought a DVD ripper and ripped a million DVD's to my iMac with 500 GB of storage and I'm down to 60 GB. Movies take up 300 GB on my iMac and music takes up 50 GB. So I was thinking the best solution was to buy an external hard drive and put my entire iTunes folder into it so I can free up 350 GB's from my iMac and get long term use out of it. I've already updated the RAM to 8GB so I think I could get another 5 years out of it. My question is what is the best type of hard drive for this situation? I don't want any lag and I stream to my Apple TV from iTunes. So should I get an external hard drive with Thinderbolt, FireWire, or USB 2.0? I also want a very RELIABLE drive because if I switch and all my music and movies over and it fails...my life will be over lol.