Hello, If at all possible I'd love help understanding external hard drive jargon… but, in a "EHD for dummies" kind of way. SSD or 7200rpm spinning discs. I get the basic idea, one spins the others don't. My EHD Needs/Wants: I plan to connect via Thunderbolt 2 1. Transfer 10+GB files to and from desktop superfast (or, as fast as I can afford). 2. Play/Edit 10+GB audio & video files that are on the EHD for use with desktop without lag or image degradation. Is there much of a difference between a SSD & the others for my needs? I originally thought of using a LaCie 3TB d2 Thunderbolt 2 External Hard Drive. Storage size aside… is there something better out there at a similar price? $399 and under would be my preferred range. After researching, I'm more confused than ever with so much computer speak… I'm hoping for simple facts if there are any?? Thank you P.S. If there is a better 7200rpm EHD w/TB2 over the LaCaie I'd like to know.