Received this a few days ago and only used it twice. I'm doing research and need to transfer gigabytes of data several times a week. I am transferring large files with thousands of data points. It's absolutely perfect. It's fast, works great with both older and newer Windows OS (I've used it on 7 and 10) and it just does what it's supposed to do! It comes in a thick plastic "case". , which I use as a regular tote bag; I like that it's thick and the disc is very tight and doesn't slip. I can…