Things have come a long way since I was overjoyed to get a 20 MB Seagate 5.25 inch full height hard drive. It had its quirks though.
I lived in Bonn in Germany at that time and over the years I had it I had to low-level format the drive every Spring and Autumn, when the ambient temperature rose or fell. This meant backing up the drive to 360 KB 5.25 inch floppies every six months (oh the joys of the alcohol I consumed to relieve the boring tedium; MSDOS was not exactly - actually not in the slightest - capable of multitasking and the closest thing to waiting for a 360 KB floppy to be filled can only be compared to the Chinese Water Torture).
It also had a warning sticker on the top of it to wear safety shoes when handling it.
Back then, given the pace of PC development I could not even imagine talking about a 1 TB drive in my lifetime let alone a 4 TB one.
I've been a computer techie for 30 years and I still haven't lost my sense of wonder.
I recently bought an HDD.15 and I took the review here (among others) into consideration in making my choice. I bought it for the NAS I built and so the speed of the drive is pretty much immaterial considering that the data will be transferred over my gigabit network; making the HDD.15 exactly as fast, for my purposes, as the fastest SSD in the comparisons of the review never mind the other hard drives.
The prices I had to choose from:
Seagate HDD.15 £125
HGST 4TB DeskStar 7K4000 £170
WD 4TB Black £233
This pretty much made choosing the HDD.15 a no-brainer.
Another thing I took into consideration which was not even measured in the test above was the temperature of the drives. I assumed that the HDD.15 would run cooler and I was right. I have a Seagate 3 TB 7200 RPM drive in my main machine. I ran the test "h2testw 1.4" for about 15 minutes on both drives. In my two machines the temperatures of the drives were:
Seagate 3 TB 7200 RPM drive (ST3000DM001) 44 degrees Celsius (main machine)
Seagate 4 TB 5900 RPM drive (ST4000DM000) 33 degrees Celsius (NAS)
I doubt that the temperatures on the other 4 TB drives in the test above would be any lower than on my 3 TB 7200 RPM drive. Thus, once again - for my purposes - the HDD.15 comes up as the winner.
Both my main machine and the NAS are in well ventilated casings (CoolerMaster HAF X for my main machine and the HAF XM for my NAS) and the ambient temperature in the cases are pretty much the same. So I think that is a pretty fair comparison although the airflow over the hard drives in my main machine is presently better than my NAS (waiting to see if I can get a good deal on a couple of Noctua 120's to fit onto the drive cages).
So my own personal review of the HDD.15 - with regard to my own personal needs - in comparison to the other hard drives tested:
Performance - exactly equal to the other 4 TB drives tested
Price - beats the other 4 TB drives by a country mile.
Temperature - runs a LOT cooler than the other drives.
Noise - to be honest with my ears I cannot sense any difference between my 3 TB 7200 drive and my 4 TB 5900 drive so call it a draw.
As far as warranty is concerned, let's face it every piece of computer hardware is a lottery with regard to when it will fail.
CoolerMaster HAF X, i7-990x, Gigabyte X58A-UD3R, 24GB Corsair XMS, Sapphire 7950 Vapor-X, Corsair Neutron 128GB, 3*Seagate HD (3TB), Seagate HD (1.5TB), Hitachi HD (2TB), Plextor DVD + BluRay, StorageWorks DAT 72, 29160 SCSI Adapter, Corsair H80