Bests & Worsts Reviews from Amazon

WD Released these updated versions of the Ultra's 500GB, 1TB , 2TB, and a new 3TB. (For the 2TB The old version was Model # WDBMWV0020BBK-NESN and new version is Model # WDBBKD0020BBK-NESN) I researched if there are any differences, so here is what I came up with... Pros Overall Size of new model is a tiny bit smaller ( see picture for comparison of dimensions on each new model vs old model ) Higher Capacity Available - Now Up to 3TB vs the older model only up to 2TB capacity Optional 256-bit AES hardware encryption Now available in white Same as Old Model Nothing Changed Weight is the same exact at 0.50 lbs ( 0.23 kg ) Automatic local and cloud backup Comes in 4 colors ( they still offer black, and blue, red became berry and they replaced titanium for white on the newer models) USB 3.0 connectivity Formatted for Windows, reformatting required for Mac 3-year limited warranty Same Data transfer rate and Operating temperature USB 3.0 up to 5 Gb/s (max) / USB 2.0 up to 480 Mb/s (max) Operating temperature: 5°C to 35°C / Non-op. temperature: –20°C to 65°C Cons None so far ..... Bottom Line - They are pretty similar so get what is cheaper, unless you need/buy the 3TB they never had one before New Model WDBBKD0020BBK-NESN Old Model WDBMWV0020BBK-NESN 7/7/16 Update: WD just released a brand new 4TB capacity of this drive on 6/28/16. It is essentially the same as the 2TB & 3TB versions of this drive, with additional capacity. It is the same size at 4.33 in x 0.83 in x 3.21 in, and same weight at 0.50 lbs. Offers the same 3 year warranty and will be available in the same 4 colors Classic Black, Brilliant White, Noble Blue, Wild Berry, (a new 5th color Festive Red expected to be released soon).