Faster than a hard drive, pricey, but worth it to me as a professional software developer with recent capacity-related problems. This drive is for bulk storage of development artifacts (pictures, videos, music, etc.), so ultimate speed is not a concern. Silent operation, however, is.

My dream for the last 2-3 years is to have a PC with NO mechanical HDD, as I've had failures and I honestly don't like the noise they make. Plus they are slow. SSD prices at 2-4TB are brutal right and spending this much on a hard drives makes me feel disgusting. QVO ended up sucking and doesn't perform well enough to justify the cost. These drives came down about $400 in a year so I'm just going to bite the bullet and be an early adopter. I could have saved buying them used or on eBay, but then there are potential warranty issues due to living in Canada. 4TB probably will due me for a while. 6TB WD Black was the runner up but I don't want to deal with drive failure worry or noise.

One week in: It's everything I wanted, but I feel gross spending $900 CAD on a hard drive. Zero noise, basically no heat, and way faster. Only about a quarter as fast as M2 but this is mostly a media/document drive.