Long time aperture use but finally updating my setup. Going to a new rMBP and am going to move my referenced library (currently on a USB 2 drive) to a new external hard drive and keep my main database on the internal SSD. I have the money for a new setup, but don't want to waste money if there will only be marginal benefit to my workflow. Here are my options: 1. Free - 4TB G-Tech USB 3 drive (I already have this one as a gift that can't be returned... long story) 2. Purchase a Lacie 2big Thunderbolt 4TB drive From reviews I've been reading the G-Tech gets about 150MB/s sequential read/write and the Lacie gets about 323MB/s read/write when running in Raid-0 which I would do. Obviously that's a big difference on paper but will aperture actually SEE those benefits in real world performance? I currently sort through 35MB 5D Mark III images, so the way I'm thinking, even if I click through pretty quickly the G-Tech would be able to keep up. Please let me know your thoughts/real world experiences with USB 3 vs thunderbolt for a referenced aperture library.