I am planning to retire my cMP 3,1 and switch to a 2017 (or 2018) retina iMac 27" this year. I wonder for those of you who have switched to an iMac from a cMP, what did you do regarding the 4 bays of hard drives/SSDs in the MacPro? I use all four of my cMP's bays for music, video, photography and backup (clones and TM). I also have a Synology 5 bay NAS, so I don't need another one of those yet. I want to get a 4-bay USB or Thunderbolt external enclosure for JBOD to use with the iMac. My question is between USB vs Thunderbolt enclosures, which is more reliable regrading mounting/sleep/wake from sleep, and yet quiet(er)? I don't necessarily need the speed of Thunderbolt now since all 4 drives from the cMP are 3 TB spinners, but maybe future proofing for SSDs? I would appreciate your advice. Gracias!