Summary: Been using the Caviar Black in all the systems I assemble for many years now and they are great. I bought more than 30 of these in all formats (500, 640, 1TB, 2TB) and only had 1 failed after 2 years. It was replaced swiftly by WD who honoured their warranty without problems. I still got a 640 running from 2009. They are fast but a bit noisy. In gaming system I only install those for programs (with SSD for Windows).
Summary: So when I just got this I became paranoid that it was defective, as it made the "click click clclclclikc click" sound all the time. Turns out after extensive internet searching that this is an inherent thing with modern Caviar Black HDDs, where there is bare minimum acoustic management with the seeking, to maximize speed/reliability. It took me about a month to get used to this noise though, but now it does not bother me anymore.
Pros: Reliability * warranty * Fastest non-SSD speeds you'll get
Cons: The seeking activity is LOUD, do not be alarmed, it's not a defect (though it is somewhat of a design oversight).
Summary: This is a great storage hard-drive. I upgraded to this hard drive as it can hold alot of content and I have a nice peace of mind with the 5year warranty and the fact that it is a Black hard drive. I wouldn't recommend raiding them due to lack of TLER but thats a massive storage system to require 8TB. After formatting it comes down to 3726GB. Make sure when formatting to use GPT as MBR will not recognize anything more than 2TB.
Summary: Allready had to RMA the drivea year lator but other then that ive had no issues and the RMA took a week to get me a harddrive back from the date i sent it. Would recommend to anyone who dosent want a SSD yet or a amzing drive to put your games on to boost load times
Summary: I've been using WD Black drives quite a bit in the last couple of years. Never have any issues with them, seem to be good strong and fast drives. I have 3X500 GB WD Black's in my machine now and wanted to just use one 2 TB instead. While transferring files off of my old drives and on to the 2TB using an external drive bay (eSATA), I noticed the 2 TB Black got pretty hot. Also this drive is fairly loud when being accessed.