At the time I purchased the drives, they were $90 each, which is excellent for 3 TB. I run my machine from an SSD. I would generally advise against running an operating system off of a 5400 RPM hard drive these days.
There isn't much to say about a hard drive, but: - The disk performs decently well; I haven't noticed any lag induced by I/O
- I've experienced one drive running significantly slower than the other, but it hasn't caused problems; It may have been induced by a faulty benchmark, or a bad SATA cable