Getting a OWC ThunderBay 4 thunderbolt RAID box to host my iTunes and audio sample libraries for DAW work. Needs to be quick importing files into the DAW (Ableton). Will be getting the new 27" iMac with the faster SSD speeds (1800mb/s) so that won't be a bottleneck here (Ableton cache folder stored on the Mac OS SSD). iTunes artwork/database will be stored on the Mac OS SSD but the actual mp3s/wavs will be on the ThunderBay. Will there be a performance difference putting in 1TB SSD's as oppososed to, say, WD Red 3TB HDD's for this use case? Thanks!